Re: Displaylink Attached Display Adapater and Monitor Not Recognized

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By the way, Alan. Thank you for looking at that. I'd really like to
get this working. --drg

On Thu, Oct 9, 2014 at 1:03 PM, Dennis Gesker <dennis@xxxxxxxxxx> wrote:
> On Wed, Oct 8, 2014 at 2:23 PM, Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> wrote:
>> lsusb -v
>
>
> Bus 002 Device 003: ID 04f2:b34c Chicony Electronics Co., Ltd
> Device Descriptor:
>   bLength                18
>   bDescriptorType         1
>   bcdUSB               2.00
>   bDeviceClass          239 Miscellaneous Device
>   bDeviceSubClass         2 ?
>   bDeviceProtocol         1 Interface Association
>   bMaxPacketSize0        64
>   idVendor           0x04f2 Chicony Electronics Co., Ltd
>   idProduct          0xb34c
>   bcdDevice           91.57
>   iManufacturer           1
>   iProduct                2
>   iSerial                 0
>   bNumConfigurations      1
>   Configuration Descriptor:
>     bLength                 9
>     bDescriptorType         2
>     wTotalLength          903
>     bNumInterfaces          2
>     bConfigurationValue     1
>     iConfiguration          0
>     bmAttributes         0x80
>       (Bus Powered)
>     MaxPower              500mA
>     Interface Association:
>       bLength                 8
>       bDescriptorType        11
>       bFirstInterface         0
>       bInterfaceCount         2
>       bFunctionClass         14 Video
>       bFunctionSubClass       3 Video Interface Collection
>       bFunctionProtocol       0
>       iFunction               4
>     Interface Descriptor:
>       bLength                 9
>       bDescriptorType         4
>       bInterfaceNumber        0
>       bAlternateSetting       0
>       bNumEndpoints           1
>       bInterfaceClass        14 Video
>       bInterfaceSubClass      1 Video Control
>       bInterfaceProtocol      0
>       iInterface              4
>       VideoControl Interface Descriptor:
>         bLength                13
>         bDescriptorType        36
>         bDescriptorSubtype      1 (HEADER)
>         bcdUVC               1.00
>         wTotalLength           79
>         dwClockFrequency       30.000000MHz
>         bInCollection           1
>         baInterfaceNr( 0)       1
>       VideoControl Interface Descriptor:
>         bLength                28
>         bDescriptorType        36
>         bDescriptorSubtype      6 (EXTENSION_UNIT)
>         bUnitID                 6
>         guidExtensionCode         {b0d0bb68-a461-834b-90b7-a6215f3c4f70}
>         bNumControl            24
>         bNrPins                 1
>         baSourceID( 0)          2
>         bControlSize            3
>         bmControls( 0)       0xff
>         bmControls( 1)       0xff
>         bmControls( 2)       0xff
>         iExtension              0
>       VideoControl Interface Descriptor:
>         bLength                18
>         bDescriptorType        36
>         bDescriptorSubtype      2 (INPUT_TERMINAL)
>         bTerminalID             1
>         wTerminalType      0x0201 Camera Sensor
>         bAssocTerminal          0
>         iTerminal               0
>         wObjectiveFocalLengthMin      0
>         wObjectiveFocalLengthMax      0
>         wOcularFocalLength            0
>         bControlSize                  3
>         bmControls           0x00000004
>           Auto-Exposure Priority
>       VideoControl Interface Descriptor:
>         bLength                11
>         bDescriptorType        36
>         bDescriptorSubtype      5 (PROCESSING_UNIT)
>       Warning: Descriptor too short
>         bUnitID                 2
>         bSourceID               1
>         wMaxMultiplier          0
>         bControlSize            2
>         bmControls     0x0000157f
>           Brightness
>           Contrast
>           Hue
>           Saturation
>           Sharpness
>           Gamma
>           White Balance Temperature
>           Backlight Compensation
>           Power Line Frequency
>           White Balance Temperature, Auto
>         iProcessing             0
>         bmVideoStandards     0x 9
>           None
>           SECAM - 625/50
>       VideoControl Interface Descriptor:
>         bLength                 9
>         bDescriptorType        36
>         bDescriptorSubtype      3 (OUTPUT_TERMINAL)
>         bTerminalID             3
>         wTerminalType      0x0101 USB Streaming
>         bAssocTerminal          0
>         bSourceID               2
>         iTerminal               0
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x81  EP 1 IN
>         bmAttributes            3
>           Transfer Type            Interrupt
>           Synch Type               None
>           Usage Type               Data
>         wMaxPacketSize     0x0010  1x 16 bytes
>         bInterval               7
>     Interface Descriptor:
>       bLength                 9
>       bDescriptorType         4
>       bInterfaceNumber        1
>       bAlternateSetting       0
>       bNumEndpoints           0
>       bInterfaceClass        14 Video
>       bInterfaceSubClass      2 Video Streaming
>       bInterfaceProtocol      0
>       iInterface              4
>       VideoStreaming Interface Descriptor:
>         bLength                            15
>         bDescriptorType                    36
>         bDescriptorSubtype                  1 (INPUT_HEADER)
>         bNumFormats                         2
>         wTotalLength                      713
>         bEndPointAddress                  130
>         bmInfo                              0
>         bTerminalLink                       3
>         bStillCaptureMethod                 2
>         bTriggerSupport                     1
>         bTriggerUsage                       0
>         bControlSize                        1
>         bmaControls( 0)                    27
>         bmaControls( 1)                    27
>       VideoStreaming Interface Descriptor:
>         bLength                            27
>         bDescriptorType                    36
>         bDescriptorSubtype                  4 (FORMAT_UNCOMPRESSED)
>         bFormatIndex                        1
>         bNumFrameDescriptors                9
>         guidFormat
> {59555932-0000-1000-8000-00aa00389b71}
>         bBitsPerPixel                      16
>         bDefaultFrameIndex                  1
>         bAspectRatioX                       0
>         bAspectRatioY                       0
>         bmInterlaceFlags                 0x00
>           Interlaced stream or variable: No
>           Fields per frame: 2 fields
>           Field 1 first: No
>           Field pattern: Field 1 only
>           bCopyProtect                      0
>       VideoStreaming Interface Descriptor:
>         bLength                            34
>         bDescriptorType                    36
>         bDescriptorSubtype                  5 (FRAME_UNCOMPRESSED)
>         bFrameIndex                         1
>         bmCapabilities                   0x00
>           Still image unsupported
>         wWidth                            640
>         wHeight                           480
>         dwMinBitRate                 73728000
>         dwMaxBitRate                147456000
>         dwMaxVideoFrameBufferSize      614400
>         dwDefaultFrameInterval         333333
>         bFrameIntervalType                  2
>         dwFrameInterval( 0)            333333
>         dwFrameInterval( 1)            666666
>       VideoStreaming Interface Descriptor:
>         bLength                            34
>         bDescriptorType                    36
>         bDescriptorSubtype                  5 (FRAME_UNCOMPRESSED)
>         bFrameIndex                         2
>         bmCapabilities                   0x00
>           Still image unsupported
>         wWidth                            352
>         wHeight                           288
>         dwMinBitRate                 24330240
>         dwMaxBitRate                 48660480
>         dwMaxVideoFrameBufferSize      202752
>         dwDefaultFrameInterval         333333
>         bFrameIntervalType                  2
>         dwFrameInterval( 0)            333333
>         dwFrameInterval( 1)            666666
>       VideoStreaming Interface Descriptor:
>         bLength                            34
>         bDescriptorType                    36
>         bDescriptorSubtype                  5 (FRAME_UNCOMPRESSED)
>         bFrameIndex                         3
>         bmCapabilities                   0x00
>           Still image unsupported
>         wWidth                            320
>         wHeight                           240
>         dwMinBitRate                 18432000
>         dwMaxBitRate                 36864000
>         dwMaxVideoFrameBufferSize      153600
>         dwDefaultFrameInterval         333333
>         bFrameIntervalType                  2
>         dwFrameInterval( 0)            333333
>         dwFrameInterval( 1)            666666
>       VideoStreaming Interface Descriptor:
>         bLength                            34
>         bDescriptorType                    36
>         bDescriptorSubtype                  5 (FRAME_UNCOMPRESSED)
>         bFrameIndex                         4
>         bmCapabilities                   0x00
>           Still image unsupported
>         wWidth                            160
>         wHeight                           120
>         dwMinBitRate                  4608000
>         dwMaxBitRate                  9216000
>         dwMaxVideoFrameBufferSize       38400
>         dwDefaultFrameInterval         333333
>         bFrameIntervalType                  2
>         dwFrameInterval( 0)            333333
>         dwFrameInterval( 1)            666666
>       VideoStreaming Interface Descriptor:
>         bLength                            34
>         bDescriptorType                    36
>         bDescriptorSubtype                  5 (FRAME_UNCOMPRESSED)
>         bFrameIndex                         5
>         bmCapabilities                   0x00
>           Still image unsupported
>         wWidth                            176
>         wHeight                           144
>         dwMinBitRate                  6082560
>         dwMaxBitRate                 12165120
>         dwMaxVideoFrameBufferSize       50688
>         dwDefaultFrameInterval         333333
>         bFrameIntervalType                  2
>         dwFrameInterval( 0)            333333
>         dwFrameInterval( 1)            666666
>       VideoStreaming Interface Descriptor:
>         bLength                            30
>         bDescriptorType                    36
>         bDescriptorSubtype                  5 (FRAME_UNCOMPRESSED)
>         bFrameIndex                         6
>         bmCapabilities                   0x00
>           Still image unsupported
>         wWidth                           1600
>         wHeight                          1200
>         dwMinBitRate                153600000
>         dwMaxBitRate                153600000
>         dwMaxVideoFrameBufferSize     3840000
>         dwDefaultFrameInterval        2000000
>         bFrameIntervalType                  1
>         dwFrameInterval( 0)           2000000
>       VideoStreaming Interface Descriptor:
>         bLength                            30
>         bDescriptorType                    36
>         bDescriptorSubtype                  5 (FRAME_UNCOMPRESSED)
>         bFrameIndex                         7
>         bmCapabilities                   0x00
>           Still image unsupported
>         wWidth                           1280
>         wHeight                          1024
>         dwMinBitRate                167772160
>         dwMaxBitRate                167772160
>         dwMaxVideoFrameBufferSize     2621440
>         dwDefaultFrameInterval        1250000
>         bFrameIntervalType                  1
>         dwFrameInterval( 0)           1250000
>       VideoStreaming Interface Descriptor:
>         bLength                            30
>         bDescriptorType                    36
>         bDescriptorSubtype                  5 (FRAME_UNCOMPRESSED)
>         bFrameIndex                         8
>         bmCapabilities                   0x00
>           Still image unsupported
>         wWidth                           1280
>         wHeight                           720
>         dwMinBitRate                147456000
>         dwMaxBitRate                147456000
>         dwMaxVideoFrameBufferSize     1843200
>         dwDefaultFrameInterval        1000000
>         bFrameIntervalType                  1
>         dwFrameInterval( 0)           1000000
>       VideoStreaming Interface Descriptor:
>         bLength                            34
>         bDescriptorType                    36
>         bDescriptorSubtype                  5 (FRAME_UNCOMPRESSED)
>         bFrameIndex                         9
>         bmCapabilities                   0x00
>           Still image unsupported
>         wWidth                            640
>         wHeight                           480
>         dwMinBitRate                 73728000
>         dwMaxBitRate                147456000
>         dwMaxVideoFrameBufferSize      614400
>         dwDefaultFrameInterval         333333
>         bFrameIntervalType                  2
>         dwFrameInterval( 0)            333333
>         dwFrameInterval( 1)            666666
>       VideoStreaming Interface Descriptor:
>         bLength                            42
>         bDescriptorType                    36
>         bDescriptorSubtype                  3 (STILL_IMAGE_FRAME)
>         bEndpointAddress                    0
>         bNumImageSizePatterns               9
>         wWidth( 0)                        640
>         wHeight( 0)                       480
>         wWidth( 1)                        352
>         wHeight( 1)                       288
>         wWidth( 2)                        320
>         wHeight( 2)                       240
>         wWidth( 3)                        160
>         wHeight( 3)                       120
>         wWidth( 4)                        176
>         wHeight( 4)                       144
>         wWidth( 5)                       1600
>         wHeight( 5)                      1200
>         wWidth( 6)                       1280
>         wHeight( 6)                      1024
>         wWidth( 7)                       1280
>         wHeight( 7)                       720
>         wWidth( 8)                        640
>         wHeight( 8)                       480
>         bNumCompressionPatterns             9
>       VideoStreaming Interface Descriptor:
>         bLength                             6
>         bDescriptorType                    36
>         bDescriptorSubtype                 13 (COLORFORMAT)
>         bColorPrimaries                     1 (BT.709,sRGB)
>         bTransferCharacteristics            1 (BT.709)
>         bMatrixCoefficients                 4 (SMPTE 170M (BT.601))
>       VideoStreaming Interface Descriptor:
>         bLength                            11
>         bDescriptorType                    36
>         bDescriptorSubtype                  6 (FORMAT_MJPEG)
>         bFormatIndex                        2
>         bNumFrameDescriptors                9
>         bFlags                              1
>           Fixed-size samples: Yes
>         bDefaultFrameIndex                  1
>         bAspectRatioX                       0
>         bAspectRatioY                       0
>         bmInterlaceFlags                 0x00
>           Interlaced stream or variable: No
>           Fields per frame: 1 fields
>           Field 1 first: No
>           Field pattern: Field 1 only
>           bCopyProtect                      0
>       VideoStreaming Interface Descriptor:
>         bLength                            30
>         bDescriptorType                    36
>         bDescriptorSubtype                  7 (FRAME_MJPEG)
>         bFrameIndex                         1
>         bmCapabilities                   0x00
>           Still image unsupported
>         wWidth                            640
>         wHeight                           480
>         dwMinBitRate                221184000
>         dwMaxBitRate                221184000
>         dwMaxVideoFrameBufferSize      921600
>         dwDefaultFrameInterval         333333
>         bFrameIntervalType                  1
>         dwFrameInterval( 0)            333333
>       VideoStreaming Interface Descriptor:
>         bLength                            30
>         bDescriptorType                    36
>         bDescriptorSubtype                  7 (FRAME_MJPEG)
>         bFrameIndex                         2
>         bmCapabilities                   0x00
>           Still image unsupported
>         wWidth                            352
>         wHeight                           288
>         dwMinBitRate                 72990720
>         dwMaxBitRate                 72990720
>         dwMaxVideoFrameBufferSize      304128
>         dwDefaultFrameInterval         333333
>         bFrameIntervalType                  1
>         dwFrameInterval( 0)            333333
>       VideoStreaming Interface Descriptor:
>         bLength                            30
>         bDescriptorType                    36
>         bDescriptorSubtype                  7 (FRAME_MJPEG)
>         bFrameIndex                         3
>         bmCapabilities                   0x00
>           Still image unsupported
>         wWidth                            320
>         wHeight                           240
>         dwMinBitRate                 55296000
>         dwMaxBitRate                 55296000
>         dwMaxVideoFrameBufferSize      230400
>         dwDefaultFrameInterval         333333
>         bFrameIntervalType                  1
>         dwFrameInterval( 0)            333333
>       VideoStreaming Interface Descriptor:
>         bLength                            30
>         bDescriptorType                    36
>         bDescriptorSubtype                  7 (FRAME_MJPEG)
>         bFrameIndex                         4
>         bmCapabilities                   0x00
>           Still image unsupported
>         wWidth                            160
>         wHeight                           120
>         dwMinBitRate                 13824000
>         dwMaxBitRate                 13824000
>         dwMaxVideoFrameBufferSize       57600
>         dwDefaultFrameInterval         333333
>         bFrameIntervalType                  1
>         dwFrameInterval( 0)            333333
>       VideoStreaming Interface Descriptor:
>         bLength                            30
>         bDescriptorType                    36
>         bDescriptorSubtype                  7 (FRAME_MJPEG)
>         bFrameIndex                         5
>         bmCapabilities                   0x00
>           Still image unsupported
>         wWidth                            176
>         wHeight                           144
>         dwMinBitRate                 18247680
>         dwMaxBitRate                 18247680
>         dwMaxVideoFrameBufferSize       76032
>         dwDefaultFrameInterval         333333
>         bFrameIntervalType                  1
>         dwFrameInterval( 0)            333333
>       VideoStreaming Interface Descriptor:
>         bLength                            30
>         bDescriptorType                    36
>         bDescriptorSubtype                  7 (FRAME_MJPEG)
>         bFrameIndex                         6
>         bmCapabilities                   0x00
>           Still image unsupported
>         wWidth                           1600
>         wHeight                          1200
>         dwMinBitRate                691200000
>         dwMaxBitRate                691200000
>         dwMaxVideoFrameBufferSize     5760000
>         dwDefaultFrameInterval         666666
>         bFrameIntervalType                  1
>         dwFrameInterval( 0)            666666
>       VideoStreaming Interface Descriptor:
>         bLength                            30
>         bDescriptorType                    36
>         bDescriptorSubtype                  7 (FRAME_MJPEG)
>         bFrameIndex                         7
>         bmCapabilities                   0x00
>           Still image unsupported
>         wWidth                           1280
>         wHeight                          1024
>         dwMinBitRate                471859200
>         dwMaxBitRate                471859200
>         dwMaxVideoFrameBufferSize     3932160
>         dwDefaultFrameInterval         666666
>         bFrameIntervalType                  1
>         dwFrameInterval( 0)            666666
>       VideoStreaming Interface Descriptor:
>         bLength                            30
>         bDescriptorType                    36
>         bDescriptorSubtype                  7 (FRAME_MJPEG)
>         bFrameIndex                         8
>         bmCapabilities                   0x00
>           Still image unsupported
>         wWidth                           1280
>         wHeight                           720
>         dwMinBitRate                663552000
>         dwMaxBitRate                663552000
>         dwMaxVideoFrameBufferSize     2764800
>         dwDefaultFrameInterval         333333
>         bFrameIntervalType                  1
>         dwFrameInterval( 0)            333333
>       VideoStreaming Interface Descriptor:
>         bLength                            30
>         bDescriptorType                    36
>         bDescriptorSubtype                  7 (FRAME_MJPEG)
>         bFrameIndex                         9
>         bmCapabilities                   0x00
>           Still image unsupported
>         wWidth                            640
>         wHeight                           480
>         dwMinBitRate                221184000
>         dwMaxBitRate                221184000
>         dwMaxVideoFrameBufferSize      921600
>         dwDefaultFrameInterval         333333
>         bFrameIntervalType                  1
>         dwFrameInterval( 0)            333333
>       VideoStreaming Interface Descriptor:
>         bLength                            42
>         bDescriptorType                    36
>         bDescriptorSubtype                  3 (STILL_IMAGE_FRAME)
>         bEndpointAddress                    0
>         bNumImageSizePatterns               9
>         wWidth( 0)                        640
>         wHeight( 0)                       480
>         wWidth( 1)                        352
>         wHeight( 1)                       288
>         wWidth( 2)                        320
>         wHeight( 2)                       240
>         wWidth( 3)                        160
>         wHeight( 3)                       120
>         wWidth( 4)                        176
>         wHeight( 4)                       144
>         wWidth( 5)                       1600
>         wHeight( 5)                      1200
>         wWidth( 6)                       1280
>         wHeight( 6)                      1024
>         wWidth( 7)                       1280
>         wHeight( 7)                       720
>         wWidth( 8)                        640
>         wHeight( 8)                       480
>         bNumCompressionPatterns             9
>       VideoStreaming Interface Descriptor:
>         bLength                             6
>         bDescriptorType                    36
>         bDescriptorSubtype                 13 (COLORFORMAT)
>         bColorPrimaries                     1 (BT.709,sRGB)
>         bTransferCharacteristics            1 (BT.709)
>         bMatrixCoefficients                 4 (SMPTE 170M (BT.601))
>     Interface Descriptor:
>       bLength                 9
>       bDescriptorType         4
>       bInterfaceNumber        1
>       bAlternateSetting       1
>       bNumEndpoints           1
>       bInterfaceClass        14 Video
>       bInterfaceSubClass      2 Video Streaming
>       bInterfaceProtocol      0
>       iInterface              4
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x82  EP 2 IN
>         bmAttributes            5
>           Transfer Type            Isochronous
>           Synch Type               Asynchronous
>           Usage Type               Data
>         wMaxPacketSize     0x1400  3x 1024 bytes
>         bInterval               1
>     Interface Descriptor:
>       bLength                 9
>       bDescriptorType         4
>       bInterfaceNumber        1
>       bAlternateSetting       2
>       bNumEndpoints           1
>       bInterfaceClass        14 Video
>       bInterfaceSubClass      2 Video Streaming
>       bInterfaceProtocol      0
>       iInterface              4
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x82  EP 2 IN
>         bmAttributes            5
>           Transfer Type            Isochronous
>           Synch Type               Asynchronous
>           Usage Type               Data
>         wMaxPacketSize     0x0c00  2x 1024 bytes
>         bInterval               1
>     Interface Descriptor:
>       bLength                 9
>       bDescriptorType         4
>       bInterfaceNumber        1
>       bAlternateSetting       3
>       bNumEndpoints           1
>       bInterfaceClass        14 Video
>       bInterfaceSubClass      2 Video Streaming
>       bInterfaceProtocol      0
>       iInterface              4
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x82  EP 2 IN
>         bmAttributes            5
>           Transfer Type            Isochronous
>           Synch Type               Asynchronous
>           Usage Type               Data
>         wMaxPacketSize     0x0400  1x 1024 bytes
>         bInterval               1
>     Interface Descriptor:
>       bLength                 9
>       bDescriptorType         4
>       bInterfaceNumber        1
>       bAlternateSetting       4
>       bNumEndpoints           1
>       bInterfaceClass        14 Video
>       bInterfaceSubClass      2 Video Streaming
>       bInterfaceProtocol      0
>       iInterface              4
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x82  EP 2 IN
>         bmAttributes            5
>           Transfer Type            Isochronous
>           Synch Type               Asynchronous
>           Usage Type               Data
>         wMaxPacketSize     0x0200  1x 512 bytes
>         bInterval               1
>
> Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
> Device Descriptor:
>   bLength                18
>   bDescriptorType         1
>   bcdUSB               2.00
>   bDeviceClass            9 Hub
>   bDeviceSubClass         0 Unused
>   bDeviceProtocol         1 Single TT
>   bMaxPacketSize0        64
>   idVendor           0x8087 Intel Corp.
>   idProduct          0x0024 Integrated Rate Matching Hub
>   bcdDevice            0.00
>   iManufacturer           0
>   iProduct                0
>   iSerial                 0
>   bNumConfigurations      1
>   Configuration Descriptor:
>     bLength                 9
>     bDescriptorType         2
>     wTotalLength           25
>     bNumInterfaces          1
>     bConfigurationValue     1
>     iConfiguration          0
>     bmAttributes         0xe0
>       Self Powered
>       Remote Wakeup
>     MaxPower                0mA
>     Interface Descriptor:
>       bLength                 9
>       bDescriptorType         4
>       bInterfaceNumber        0
>       bAlternateSetting       0
>       bNumEndpoints           1
>       bInterfaceClass         9 Hub
>       bInterfaceSubClass      0 Unused
>       bInterfaceProtocol      0 Full speed (or root) hub
>       iInterface              0
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x81  EP 1 IN
>         bmAttributes            3
>           Transfer Type            Interrupt
>           Synch Type               None
>           Usage Type               Data
>         wMaxPacketSize     0x0001  1x 1 bytes
>         bInterval              12
> Hub Descriptor:
>   bLength               9
>   bDescriptorType      41
>   nNbrPorts             6
>   wHubCharacteristic 0x0009
>     Per-port power switching
>     Per-port overcurrent protection
>     TT think time 8 FS bits
>   bPwrOn2PwrGood       50 * 2 milli seconds
>   bHubContrCurrent      0 milli Ampere
>   DeviceRemovable    0x00
>   PortPwrCtrlMask    0xff
>  Hub Port Status:
>    Port 1: 0000.0100 power
>    Port 2: 0000.0100 power
>    Port 3: 0000.0100 power
>    Port 4: 0000.0100 power
>    Port 5: 0000.0100 power
>    Port 6: 0000.0507 highspeed power suspend enable connect
> Device Qualifier (for other device speed):
>   bLength                10
>   bDescriptorType         6
>   bcdUSB               2.00
>   bDeviceClass            9 Hub
>   bDeviceSubClass         0 Unused
>   bDeviceProtocol         0 Full speed (or root) hub
>   bMaxPacketSize0        64
>   bNumConfigurations      1
> Device Status:     0x0001
>   Self Powered
>
> Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
> Device Descriptor:
>   bLength                18
>   bDescriptorType         1
>   bcdUSB               2.00
>   bDeviceClass            9 Hub
>   bDeviceSubClass         0 Unused
>   bDeviceProtocol         0 Full speed (or root) hub
>   bMaxPacketSize0        64
>   idVendor           0x1d6b Linux Foundation
>   idProduct          0x0002 2.0 root hub
>   bcdDevice            3.17
>   iManufacturer           3
>   iProduct                2
>   iSerial                 1
>   bNumConfigurations      1
>   Configuration Descriptor:
>     bLength                 9
>     bDescriptorType         2
>     wTotalLength           25
>     bNumInterfaces          1
>     bConfigurationValue     1
>     iConfiguration          0
>     bmAttributes         0xe0
>       Self Powered
>       Remote Wakeup
>     MaxPower                0mA
>     Interface Descriptor:
>       bLength                 9
>       bDescriptorType         4
>       bInterfaceNumber        0
>       bAlternateSetting       0
>       bNumEndpoints           1
>       bInterfaceClass         9 Hub
>       bInterfaceSubClass      0 Unused
>       bInterfaceProtocol      0 Full speed (or root) hub
>       iInterface              0
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x81  EP 1 IN
>         bmAttributes            3
>           Transfer Type            Interrupt
>           Synch Type               None
>           Usage Type               Data
>         wMaxPacketSize     0x0004  1x 4 bytes
>         bInterval              12
>
> Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
> Device Descriptor:
>   bLength                18
>   bDescriptorType         1
>   bcdUSB               2.00
>   bDeviceClass            9 Hub
>   bDeviceSubClass         0 Unused
>   bDeviceProtocol         1 Single TT
>   bMaxPacketSize0        64
>   idVendor           0x8087 Intel Corp.
>   idProduct          0x0024 Integrated Rate Matching Hub
>   bcdDevice            0.00
>   iManufacturer           0
>   iProduct                0
>   iSerial                 0
>   bNumConfigurations      1
>   Configuration Descriptor:
>     bLength                 9
>     bDescriptorType         2
>     wTotalLength           25
>     bNumInterfaces          1
>     bConfigurationValue     1
>     iConfiguration          0
>     bmAttributes         0xe0
>       Self Powered
>       Remote Wakeup
>     MaxPower                0mA
>     Interface Descriptor:
>       bLength                 9
>       bDescriptorType         4
>       bInterfaceNumber        0
>       bAlternateSetting       0
>       bNumEndpoints           1
>       bInterfaceClass         9 Hub
>       bInterfaceSubClass      0 Unused
>       bInterfaceProtocol      0 Full speed (or root) hub
>       iInterface              0
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x81  EP 1 IN
>         bmAttributes            3
>           Transfer Type            Interrupt
>           Synch Type               None
>           Usage Type               Data
>         wMaxPacketSize     0x0001  1x 1 bytes
>         bInterval              12
> Hub Descriptor:
>   bLength               9
>   bDescriptorType      41
>   nNbrPorts             6
>   wHubCharacteristic 0x0009
>     Per-port power switching
>     Per-port overcurrent protection
>     TT think time 8 FS bits
>   bPwrOn2PwrGood       50 * 2 milli seconds
>   bHubContrCurrent      0 milli Ampere
>   DeviceRemovable    0x00
>   PortPwrCtrlMask    0xff
>  Hub Port Status:
>    Port 1: 0000.0100 power
>    Port 2: 0000.0100 power
>    Port 3: 0000.0100 power
>    Port 4: 0000.0100 power
>    Port 5: 0000.0100 power
>    Port 6: 0000.0100 power
> Device Qualifier (for other device speed):
>   bLength                10
>   bDescriptorType         6
>   bcdUSB               2.00
>   bDeviceClass            9 Hub
>   bDeviceSubClass         0 Unused
>   bDeviceProtocol         0 Full speed (or root) hub
>   bMaxPacketSize0        64
>   bNumConfigurations      1
> Device Status:     0x0001
>   Self Powered
>
> Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
> Device Descriptor:
>   bLength                18
>   bDescriptorType         1
>   bcdUSB               2.00
>   bDeviceClass            9 Hub
>   bDeviceSubClass         0 Unused
>   bDeviceProtocol         0 Full speed (or root) hub
>   bMaxPacketSize0        64
>   idVendor           0x1d6b Linux Foundation
>   idProduct          0x0002 2.0 root hub
>   bcdDevice            3.17
>   iManufacturer           3
>   iProduct                2
>   iSerial                 1
>   bNumConfigurations      1
>   Configuration Descriptor:
>     bLength                 9
>     bDescriptorType         2
>     wTotalLength           25
>     bNumInterfaces          1
>     bConfigurationValue     1
>     iConfiguration          0
>     bmAttributes         0xe0
>       Self Powered
>       Remote Wakeup
>     MaxPower                0mA
>     Interface Descriptor:
>       bLength                 9
>       bDescriptorType         4
>       bInterfaceNumber        0
>       bAlternateSetting       0
>       bNumEndpoints           1
>       bInterfaceClass         9 Hub
>       bInterfaceSubClass      0 Unused
>       bInterfaceProtocol      0 Full speed (or root) hub
>       iInterface              0
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x81  EP 1 IN
>         bmAttributes            3
>           Transfer Type            Interrupt
>           Synch Type               None
>           Usage Type               Data
>         wMaxPacketSize     0x0004  1x 4 bytes
>         bInterval              12
>
> Bus 004 Device 003: ID 17e9:4318 DisplayLink
> Device Descriptor:
>   bLength                18
>   bDescriptorType         1
>   bcdUSB               3.00
>   bDeviceClass          239 Miscellaneous Device
>   bDeviceSubClass         2 ?
>   bDeviceProtocol         1 Interface Association
>   bMaxPacketSize0         9
>   idVendor           0x17e9 DisplayLink
>   idProduct          0x4318
>   bcdDevice            1.02
>   iManufacturer           1
>   iProduct                2
>   iSerial                 3
>   bNumConfigurations      1
>   Configuration Descriptor:
>     bLength                 9
>     bDescriptorType         2
>     wTotalLength          608
>     bNumInterfaces          7
>     bConfigurationValue     1
>     iConfiguration          0
>     bmAttributes         0xe0
>       Self Powered
>       Remote Wakeup
>     MaxPower                2mA
>     Interface Descriptor:
>       bLength                 9
>       bDescriptorType         4
>       bInterfaceNumber        0
>       bAlternateSetting       0
>       bNumEndpoints           3
>       bInterfaceClass       255 Vendor Specific Class
>       bInterfaceSubClass      0
>       bInterfaceProtocol      3
>       iInterface              0
>       ** UNRECOGNIZED:  0c 5f 01 00 0a 00 04 04 01 00 04 00
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x02  EP 2 OUT
>         bmAttributes            2
>           Transfer Type            Bulk
>           Synch Type               None
>           Usage Type               Data
>         wMaxPacketSize     0x0400  1x 1024 bytes
>         bInterval               0
>         bMaxBurst               0
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x84  EP 4 IN
>         bmAttributes            2
>           Transfer Type            Bulk
>           Synch Type               None
>           Usage Type               Data
>         wMaxPacketSize     0x0400  1x 1024 bytes
>         bInterval               0
>         bMaxBurst               0
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x85  EP 5 IN
>         bmAttributes            3
>           Transfer Type            Interrupt
>           Synch Type               None
>           Usage Type               Data
>         wMaxPacketSize     0x0008  1x 8 bytes
>         bInterval               5
>         bMaxBurst               0
>     Interface Descriptor:
>       bLength                 9
>       bDescriptorType         4
>       bInterfaceNumber        1
>       bAlternateSetting       0
>       bNumEndpoints           0
>       bInterfaceClass       254 Application Specific Interface
>       bInterfaceSubClass      1 Device Firmware Update
>       bInterfaceProtocol      1
>       iInterface              0
>       Device Firmware Upgrade Interface Descriptor:
>         bLength                             9
>         bDescriptorType                    33
>         bmAttributes                        1
>           Will Not Detach
>           Manifestation Intolerant
>           Upload Unsupported
>           Download Supported
>         wDetachTimeout                    200 milliseconds
>         wTransferSize                    1024 bytes
>         bcdDFUVersion                   1.01
>       ** UNRECOGNIZED:  10 40 07 00 05 06 04 00 45 6c 6c 61 44 6f 63 6b
>     Interface Association:
>       bLength                 8
>       bDescriptorType        11
>       bFirstInterface         2
>       bInterfaceCount         3
>       bFunctionClass          1 Audio
>       bFunctionSubClass       0
>       bFunctionProtocol      32
>       iFunction               7
>     Interface Descriptor:
>       bLength                 9
>       bDescriptorType         4
>       bInterfaceNumber        2
>       bAlternateSetting       0
>       bNumEndpoints           1
>       bInterfaceClass         1 Audio
>       bInterfaceSubClass      1 Control Device
>       bInterfaceProtocol     32
>       iInterface              7
>       AudioControl Interface Descriptor:
>         bLength                 9
>         bDescriptorType        36
>         bDescriptorSubtype      1 (HEADER)
>         bcdADC               2.00
>         bCategory              11
>         wTotalLength          256
>         bmControl            0x00
>       AudioControl Interface Descriptor:
>         bLength                12
>         bDescriptorType        36
>         bDescriptorSubtype      3 (OUTPUT_TERMINAL)
>         bTerminalID             1
>         wTerminalType      0x0602 Digital Audio Interface
>         bAssocTerminal          0
>         bSourceID              14
>         bCSourceID             10
>         bmControls         0x0004
>           Connector Control (read-only)
>         iTerminal               0
>       AudioControl Interface Descriptor:
>         bLength                17
>         bDescriptorType        36
>         bDescriptorSubtype      2 (INPUT_TERMINAL)
>         bTerminalID             8
>         wTerminalType      0x0201 Microphone
>         bAssocTerminal          0
>         bCSourceID             10
>         bNrChannels             2
>         bmChannelConfig   0x00000003
>           Front Left (FL)
>           Front Right (FR)
>         bmControls    0x0004
>           Connector Control (read-only)
>         iChannelNames           0
>         iTerminal               0
>       AudioControl Interface Descriptor:
>         bLength                 8
>         bDescriptorType        36
>         bDescriptorSubtype     10 (CLOCK_SOURCE)
>         bClockID               10
>         bmAttributes         0x01 Internal fixed Clock
>         bmControls           0x07
>           Clock Frequency Control (read/write)
>           Clock Validity Control (read-only)
>         bAssocTerminal          0
>         iClockSource            0
>       AudioControl Interface Descriptor:
>         bLength                18
>         bDescriptorType        36
>         bDescriptorSubtype      6 (FEATURE_UNIT)
>         bUnitID                11
>         bSourceID               8
>         bmaControls( 0)      0x00000000
>         bmaControls( 1)      0x0000000f
>           Mute Control (read/write)
>           Volume Control (read/write)
>         bmaControls( 2)      0x0000000f
>           Mute Control (read/write)
>           Volume Control (read/write)
>         iFeature                0
>       AudioControl Interface Descriptor:
>         bLength                12
>         bDescriptorType        36
>         bDescriptorSubtype      3 (OUTPUT_TERMINAL)
>         bTerminalID            12
>         wTerminalType      0x0101 USB Streaming
>         bAssocTerminal          0
>         bSourceID              11
>         bCSourceID             10
>         bmControls         0x0000
>         iTerminal               4
>       AudioControl Interface Descriptor:
>         bLength                17
>         bDescriptorType        36
>         bDescriptorSubtype      2 (INPUT_TERMINAL)
>         bTerminalID            13
>         wTerminalType      0x0101 USB Streaming
>         bAssocTerminal          0
>         bCSourceID             10
>         bNrChannels             6
>         bmChannelConfig   0x0000003f
>           Front Left (FL)
>           Front Right (FR)
>           Front Center (FC)
>           Low Frequency Effects (LFE)
>           Back Left (BL)
>           Back Right (BR)
>         bmControls    0x0000
>         iChannelNames           0
>         iTerminal               5
>       AudioControl Interface Descriptor:
>         bLength                34
>         bDescriptorType        36
>         bDescriptorSubtype      6 (FEATURE_UNIT)
>         bUnitID                14
>         bSourceID              13
>         bmaControls( 0)      0x00000000
>         bmaControls( 1)      0x0000000f
>           Mute Control (read/write)
>           Volume Control (read/write)
>         bmaControls( 2)      0x0000000f
>           Mute Control (read/write)
>           Volume Control (read/write)
>         bmaControls( 3)      0x0000000f
>           Mute Control (read/write)
>           Volume Control (read/write)
>         bmaControls( 4)      0x0000000f
>           Mute Control (read/write)
>           Volume Control (read/write)
>         bmaControls( 5)      0x0000000f
>           Mute Control (read/write)
>           Volume Control (read/write)
>         bmaControls( 6)      0x0000000f
>           Mute Control (read/write)
>           Volume Control (read/write)
>         iFeature                0
>       ** UNRECOGNIZED:  40 5f 00 00 00 00 00 00 00 00 00 00 00 00 00
> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> 00 00 00
>       ** UNRECOGNIZED:  41 5f 00 00 00 00 00 00 00 00 00 00 00 00 00
> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> 00 00 00 00
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x83  EP 3 IN
>         bmAttributes            3
>           Transfer Type            Interrupt
>           Synch Type               None
>           Usage Type               Data
>         wMaxPacketSize     0x0006  1x 6 bytes
>         bInterval               5
>         bMaxBurst               0
>     Interface Descriptor:
>       bLength                 9
>       bDescriptorType         4
>       bInterfaceNumber        3
>       bAlternateSetting       0
>       bNumEndpoints           0
>       bInterfaceClass         1 Audio
>       bInterfaceSubClass      2 Streaming
>       bInterfaceProtocol     32
>       iInterface              7
>     Interface Descriptor:
>       bLength                 9
>       bDescriptorType         4
>       bInterfaceNumber        3
>       bAlternateSetting       1
>       bNumEndpoints           1
>       bInterfaceClass         1 Audio
>       bInterfaceSubClass      2 Streaming
>       bInterfaceProtocol     32
>       iInterface              7
>       AudioStreaming Interface Descriptor:
>         bLength                16
>         bDescriptorType        36
>         bDescriptorSubtype      1 (AS_GENERAL)
>         bTerminalLink          13
>         bmControls           0x00
>         bFormatType             1
>         bmFormats         0x00000001
>           PCM
>         bNrChannels             6
>         bmChannelConfig   0x0000003f
>           Front Left (FL)
>           Front Right (FR)
>           Front Center (FC)
>           Low Frequency Effects (LFE)
>           Back Left (BL)
>           Back Right (BR)
>         iChannelNames           0
>       AudioStreaming Interface Descriptor:
>         bLength                 6
>         bDescriptorType        36
>         bDescriptorSubtype      2 (FORMAT_TYPE)
>         bFormatType             1 (FORMAT_TYPE_I)
>         bSubslotSize            2
>         bBitResolution         16
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x09  EP 9 OUT
>         bmAttributes           13
>           Transfer Type            Isochronous
>           Synch Type               Synchronous
>           Usage Type               Data
>         wMaxPacketSize     0x024c  1x 588 bytes
>         bInterval               4
>         bMaxBurst               0
>         AudioControl Endpoint Descriptor:
>           bLength                 8
>           bDescriptorType        37
>           bDescriptorSubtype      1 (EP_GENERAL)
>           bmAttributes         0x00
>           bmControls           0x00
>           bLockDelayUnits         1 Milliseconds
>           wLockDelay              0
>     Interface Descriptor:
>       bLength                 9
>       bDescriptorType         4
>       bInterfaceNumber        4
>       bAlternateSetting       0
>       bNumEndpoints           0
>       bInterfaceClass         1 Audio
>       bInterfaceSubClass      2 Streaming
>       bInterfaceProtocol     32
>       iInterface              7
>     Interface Descriptor:
>       bLength                 9
>       bDescriptorType         4
>       bInterfaceNumber        4
>       bAlternateSetting       1
>       bNumEndpoints           1
>       bInterfaceClass         1 Audio
>       bInterfaceSubClass      2 Streaming
>       bInterfaceProtocol     32
>       iInterface              7
>       AudioStreaming Interface Descriptor:
>         bLength                16
>         bDescriptorType        36
>         bDescriptorSubtype      1 (AS_GENERAL)
>         bTerminalLink          12
>         bmControls           0x00
>         bFormatType             1
>         bmFormats         0x00000001
>           PCM
>         bNrChannels             2
>         bmChannelConfig   0x00000003
>           Front Left (FL)
>           Front Right (FR)
>         iChannelNames           0
>       AudioStreaming Interface Descriptor:
>         bLength                 6
>         bDescriptorType        36
>         bDescriptorSubtype      2 (FORMAT_TYPE)
>         bFormatType             1 (FORMAT_TYPE_I)
>         bSubslotSize            2
>         bBitResolution         16
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x81  EP 1 IN
>         bmAttributes            5
>           Transfer Type            Isochronous
>           Synch Type               Asynchronous
>           Usage Type               Data
>         wMaxPacketSize     0x00c4  1x 196 bytes
>         bInterval               4
>         bMaxBurst               0
>         AudioControl Endpoint Descriptor:
>           bLength                 8
>           bDescriptorType        37
>           bDescriptorSubtype      1 (EP_GENERAL)
>           bmAttributes         0x00
>           bmControls           0x00
>           bLockDelayUnits         1 Milliseconds
>           wLockDelay              0
>     Interface Association:
>       bLength                 8
>       bDescriptorType        11
>       bFirstInterface         5
>       bInterfaceCount         2
>       bFunctionClass          2 Communications
>       bFunctionSubClass       6 Ethernet Networking
>       bFunctionProtocol       0
>       iFunction               9
>     Interface Descriptor:
>       bLength                 9
>       bDescriptorType         4
>       bInterfaceNumber        5
>       bAlternateSetting       0
>       bNumEndpoints           1
>       bInterfaceClass         2 Communications
>       bInterfaceSubClass      6 Ethernet Networking
>       bInterfaceProtocol      0
>       iInterface              9
>       CDC Header:
>         bcdCDC               1.20
>       CDC Union:
>         bMasterInterface        5
>         bSlaveInterface         6
>       CDC Ethernet:
>         iMacAddress                      8 (??)
>         bmEthernetStatistics    0x00000000
>         wMaxSegmentSize               1514
>         wNumberMCFilters            0x8010
>         bNumberPowerFilters              8
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x86  EP 6 IN
>         bmAttributes            3
>           Transfer Type            Interrupt
>           Synch Type               None
>           Usage Type               Data
>         wMaxPacketSize     0x0010  1x 16 bytes
>         bInterval               4
>         bMaxBurst               0
>     Interface Descriptor:
>       bLength                 9
>       bDescriptorType         4
>       bInterfaceNumber        6
>       bAlternateSetting       0
>       bNumEndpoints           0
>       bInterfaceClass        10 CDC Data
>       bInterfaceSubClass      0 Unused
>       bInterfaceProtocol      0
>       iInterface              9
>     Interface Descriptor:
>       bLength                 9
>       bDescriptorType         4
>       bInterfaceNumber        6
>       bAlternateSetting       1
>       bNumEndpoints           2
>       bInterfaceClass        10 CDC Data
>       bInterfaceSubClass      0 Unused
>       bInterfaceProtocol      0
>       iInterface              9
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x0a  EP 10 OUT
>         bmAttributes            2
>           Transfer Type            Bulk
>           Synch Type               None
>           Usage Type               Data
>         wMaxPacketSize     0x0400  1x 1024 bytes
>         bInterval               0
>         bMaxBurst               0
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x87  EP 7 IN
>         bmAttributes            2
>           Transfer Type            Bulk
>           Synch Type               None
>           Usage Type               Data
>         wMaxPacketSize     0x0400  1x 1024 bytes
>         bInterval               0
>         bMaxBurst               0
>
> Bus 004 Device 002: ID 05e3:0612 Genesys Logic, Inc.
> Device Descriptor:
>   bLength                18
>   bDescriptorType         1
>   bcdUSB               3.00
>   bDeviceClass            9 Hub
>   bDeviceSubClass         0 Unused
>   bDeviceProtocol         3
>   bMaxPacketSize0         9
>   idVendor           0x05e3 Genesys Logic, Inc.
>   idProduct          0x0612
>   bcdDevice           44.01
>   iManufacturer           1
>   iProduct                2
>   iSerial                 0
>   bNumConfigurations      1
>   Configuration Descriptor:
>     bLength                 9
>     bDescriptorType         2
>     wTotalLength           31
>     bNumInterfaces          1
>     bConfigurationValue     1
>     iConfiguration          0
>     bmAttributes         0xc0
>       Self Powered
>     MaxPower                0mA
>     Interface Descriptor:
>       bLength                 9
>       bDescriptorType         4
>       bInterfaceNumber        0
>       bAlternateSetting       0
>       bNumEndpoints           1
>       bInterfaceClass         9 Hub
>       bInterfaceSubClass      0 Unused
>       bInterfaceProtocol      0 Full speed (or root) hub
>       iInterface              1
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x83  EP 3 IN
>         bmAttributes           19
>           Transfer Type            Interrupt
>           Synch Type               None
>           Usage Type               Feedback
>         wMaxPacketSize     0x0002  1x 2 bytes
>         bInterval               8
>         bMaxBurst               0
>
> Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
> Device Descriptor:
>   bLength                18
>   bDescriptorType         1
>   bcdUSB               3.00
>   bDeviceClass            9 Hub
>   bDeviceSubClass         0 Unused
>   bDeviceProtocol         3
>   bMaxPacketSize0         9
>   idVendor           0x1d6b Linux Foundation
>   idProduct          0x0003 3.0 root hub
>   bcdDevice            3.17
>   iManufacturer           3
>   iProduct                2
>   iSerial                 1
>   bNumConfigurations      1
>   Configuration Descriptor:
>     bLength                 9
>     bDescriptorType         2
>     wTotalLength           31
>     bNumInterfaces          1
>     bConfigurationValue     1
>     iConfiguration          0
>     bmAttributes         0xe0
>       Self Powered
>       Remote Wakeup
>     MaxPower                0mA
>     Interface Descriptor:
>       bLength                 9
>       bDescriptorType         4
>       bInterfaceNumber        0
>       bAlternateSetting       0
>       bNumEndpoints           1
>       bInterfaceClass         9 Hub
>       bInterfaceSubClass      0 Unused
>       bInterfaceProtocol      0 Full speed (or root) hub
>       iInterface              0
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x81  EP 1 IN
>         bmAttributes            3
>           Transfer Type            Interrupt
>           Synch Type               None
>           Usage Type               Data
>         wMaxPacketSize     0x0004  1x 4 bytes
>         bInterval              12
>         bMaxBurst               0
>
> Bus 003 Device 003: ID 8086:0189 Intel Corp.
> Device Descriptor:
>   bLength                18
>   bDescriptorType         1
>   bcdUSB               2.00
>   bDeviceClass          224 Wireless
>   bDeviceSubClass         1 Radio Frequency
>   bDeviceProtocol         1 Bluetooth
>   bMaxPacketSize0        64
>   idVendor           0x8086 Intel Corp.
>   idProduct          0x0189
>   bcdDevice           69.19
>   iManufacturer           0
>   iProduct                0
>   iSerial                 0
>   bNumConfigurations      1
>   Configuration Descriptor:
>     bLength                 9
>     bDescriptorType         2
>     wTotalLength          177
>     bNumInterfaces          2
>     bConfigurationValue     1
>     iConfiguration          0
>     bmAttributes         0xe0
>       Self Powered
>       Remote Wakeup
>     MaxPower                0mA
>     Interface Descriptor:
>       bLength                 9
>       bDescriptorType         4
>       bInterfaceNumber        0
>       bAlternateSetting       0
>       bNumEndpoints           3
>       bInterfaceClass       224 Wireless
>       bInterfaceSubClass      1 Radio Frequency
>       bInterfaceProtocol      1 Bluetooth
>       iInterface              0
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x81  EP 1 IN
>         bmAttributes            3
>           Transfer Type            Interrupt
>           Synch Type               None
>           Usage Type               Data
>         wMaxPacketSize     0x0010  1x 16 bytes
>         bInterval               1
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x02  EP 2 OUT
>         bmAttributes            2
>           Transfer Type            Bulk
>           Synch Type               None
>           Usage Type               Data
>         wMaxPacketSize     0x0040  1x 64 bytes
>         bInterval               1
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x82  EP 2 IN
>         bmAttributes            2
>           Transfer Type            Bulk
>           Synch Type               None
>           Usage Type               Data
>         wMaxPacketSize     0x0040  1x 64 bytes
>         bInterval               1
>     Interface Descriptor:
>       bLength                 9
>       bDescriptorType         4
>       bInterfaceNumber        1
>       bAlternateSetting       0
>       bNumEndpoints           2
>       bInterfaceClass       224 Wireless
>       bInterfaceSubClass      1 Radio Frequency
>       bInterfaceProtocol      1 Bluetooth
>       iInterface              0
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x03  EP 3 OUT
>         bmAttributes            1
>           Transfer Type            Isochronous
>           Synch Type               None
>           Usage Type               Data
>         wMaxPacketSize     0x0000  1x 0 bytes
>         bInterval               1
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x83  EP 3 IN
>         bmAttributes            1
>           Transfer Type            Isochronous
>           Synch Type               None
>           Usage Type               Data
>         wMaxPacketSize     0x0000  1x 0 bytes
>         bInterval               1
>     Interface Descriptor:
>       bLength                 9
>       bDescriptorType         4
>       bInterfaceNumber        1
>       bAlternateSetting       1
>       bNumEndpoints           2
>       bInterfaceClass       224 Wireless
>       bInterfaceSubClass      1 Radio Frequency
>       bInterfaceProtocol      1 Bluetooth
>       iInterface              0
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x03  EP 3 OUT
>         bmAttributes            1
>           Transfer Type            Isochronous
>           Synch Type               None
>           Usage Type               Data
>         wMaxPacketSize     0x0009  1x 9 bytes
>         bInterval               1
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x83  EP 3 IN
>         bmAttributes            1
>           Transfer Type            Isochronous
>           Synch Type               None
>           Usage Type               Data
>         wMaxPacketSize     0x0009  1x 9 bytes
>         bInterval               1
>     Interface Descriptor:
>       bLength                 9
>       bDescriptorType         4
>       bInterfaceNumber        1
>       bAlternateSetting       2
>       bNumEndpoints           2
>       bInterfaceClass       224 Wireless
>       bInterfaceSubClass      1 Radio Frequency
>       bInterfaceProtocol      1 Bluetooth
>       iInterface              0
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x03  EP 3 OUT
>         bmAttributes            1
>           Transfer Type            Isochronous
>           Synch Type               None
>           Usage Type               Data
>         wMaxPacketSize     0x0011  1x 17 bytes
>         bInterval               1
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x83  EP 3 IN
>         bmAttributes            1
>           Transfer Type            Isochronous
>           Synch Type               None
>           Usage Type               Data
>         wMaxPacketSize     0x0011  1x 17 bytes
>         bInterval               1
>     Interface Descriptor:
>       bLength                 9
>       bDescriptorType         4
>       bInterfaceNumber        1
>       bAlternateSetting       3
>       bNumEndpoints           2
>       bInterfaceClass       224 Wireless
>       bInterfaceSubClass      1 Radio Frequency
>       bInterfaceProtocol      1 Bluetooth
>       iInterface              0
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x03  EP 3 OUT
>         bmAttributes            1
>           Transfer Type            Isochronous
>           Synch Type               None
>           Usage Type               Data
>         wMaxPacketSize     0x0019  1x 25 bytes
>         bInterval               1
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x83  EP 3 IN
>         bmAttributes            1
>           Transfer Type            Isochronous
>           Synch Type               None
>           Usage Type               Data
>         wMaxPacketSize     0x0019  1x 25 bytes
>         bInterval               1
>     Interface Descriptor:
>       bLength                 9
>       bDescriptorType         4
>       bInterfaceNumber        1
>       bAlternateSetting       4
>       bNumEndpoints           2
>       bInterfaceClass       224 Wireless
>       bInterfaceSubClass      1 Radio Frequency
>       bInterfaceProtocol      1 Bluetooth
>       iInterface              0
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x03  EP 3 OUT
>         bmAttributes            1
>           Transfer Type            Isochronous
>           Synch Type               None
>           Usage Type               Data
>         wMaxPacketSize     0x0021  1x 33 bytes
>         bInterval               1
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x83  EP 3 IN
>         bmAttributes            1
>           Transfer Type            Isochronous
>           Synch Type               None
>           Usage Type               Data
>         wMaxPacketSize     0x0021  1x 33 bytes
>         bInterval               1
>     Interface Descriptor:
>       bLength                 9
>       bDescriptorType         4
>       bInterfaceNumber        1
>       bAlternateSetting       5
>       bNumEndpoints           2
>       bInterfaceClass       224 Wireless
>       bInterfaceSubClass      1 Radio Frequency
>       bInterfaceProtocol      1 Bluetooth
>       iInterface              0
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x03  EP 3 OUT
>         bmAttributes            1
>           Transfer Type            Isochronous
>           Synch Type               None
>           Usage Type               Data
>         wMaxPacketSize     0x0031  1x 49 bytes
>         bInterval               1
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x83  EP 3 IN
>         bmAttributes            1
>           Transfer Type            Isochronous
>           Synch Type               None
>           Usage Type               Data
>         wMaxPacketSize     0x0031  1x 49 bytes
>         bInterval               1
>
> Bus 003 Device 006: ID 04ca:0040 Lite-On Technology Corp.
> Device Descriptor:
>   bLength                18
>   bDescriptorType         1
>   bcdUSB               1.10
>   bDeviceClass            0 (Defined at Interface level)
>   bDeviceSubClass         0
>   bDeviceProtocol         0
>   bMaxPacketSize0         8
>   idVendor           0x04ca Lite-On Technology Corp.
>   idProduct          0x0040
>   bcdDevice            1.22
>   iManufacturer           1
>   iProduct                2
>   iSerial                 0
>   bNumConfigurations      1
>   Configuration Descriptor:
>     bLength                 9
>     bDescriptorType         2
>     wTotalLength           59
>     bNumInterfaces          2
>     bConfigurationValue     1
>     iConfiguration          0
>     bmAttributes         0xa0
>       (Bus Powered)
>       Remote Wakeup
>     MaxPower              100mA
>     Interface Descriptor:
>       bLength                 9
>       bDescriptorType         4
>       bInterfaceNumber        0
>       bAlternateSetting       0
>       bNumEndpoints           1
>       bInterfaceClass         3 Human Interface Device
>       bInterfaceSubClass      1 Boot Interface Subclass
>       bInterfaceProtocol      1 Keyboard
>       iInterface              0
>         HID Device Descriptor:
>           bLength                 9
>           bDescriptorType        33
>           bcdHID               1.10
>           bCountryCode            0 Not supported
>           bNumDescriptors         1
>           bDescriptorType        34 Report
>           wDescriptorLength      65
>          Report Descriptors:
>            ** UNAVAILABLE **
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x81  EP 1 IN
>         bmAttributes            3
>           Transfer Type            Interrupt
>           Synch Type               None
>           Usage Type               Data
>         wMaxPacketSize     0x0008  1x 8 bytes
>         bInterval              10
>     Interface Descriptor:
>       bLength                 9
>       bDescriptorType         4
>       bInterfaceNumber        1
>       bAlternateSetting       0
>       bNumEndpoints           1
>       bInterfaceClass         3 Human Interface Device
>       bInterfaceSubClass      0 No Subclass
>       bInterfaceProtocol      0 None
>       iInterface              0
>         HID Device Descriptor:
>           bLength                 9
>           bDescriptorType        33
>           bcdHID               1.10
>           bCountryCode            0 Not supported
>           bNumDescriptors         1
>           bDescriptorType        34 Report
>           wDescriptorLength     162
>          Report Descriptors:
>            ** UNAVAILABLE **
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x82  EP 2 IN
>         bmAttributes            3
>           Transfer Type            Interrupt
>           Synch Type               None
>           Usage Type               Data
>         wMaxPacketSize     0x0008  1x 8 bytes
>         bInterval              10
>
> Bus 003 Device 005: ID 192f:0416 Avago Technologies, Pte. ADNS-5700
> Optical Mouse Controller (3-button)
> Device Descriptor:
>   bLength                18
>   bDescriptorType         1
>   bcdUSB               2.00
>   bDeviceClass            0 (Defined at Interface level)
>   bDeviceSubClass         0
>   bDeviceProtocol         0
>   bMaxPacketSize0         8
>   idVendor           0x192f Avago Technologies, Pte.
>   idProduct          0x0416 ADNS-5700 Optical Mouse Controller (3-button)
>   bcdDevice            2.00
>   iManufacturer           0
>   iProduct                2
>   iSerial                 0
>   bNumConfigurations      1
>   Configuration Descriptor:
>     bLength                 9
>     bDescriptorType         2
>     wTotalLength           34
>     bNumInterfaces          1
>     bConfigurationValue     1
>     iConfiguration          0
>     bmAttributes         0xa0
>       (Bus Powered)
>       Remote Wakeup
>     MaxPower               98mA
>     Interface Descriptor:
>       bLength                 9
>       bDescriptorType         4
>       bInterfaceNumber        0
>       bAlternateSetting       0
>       bNumEndpoints           1
>       bInterfaceClass         3 Human Interface Device
>       bInterfaceSubClass      1 Boot Interface Subclass
>       bInterfaceProtocol      2 Mouse
>       iInterface              0
>         HID Device Descriptor:
>           bLength                 9
>           bDescriptorType        33
>           bcdHID               1.11
>           bCountryCode            0 Not supported
>           bNumDescriptors         1
>           bDescriptorType        34 Report
>           wDescriptorLength      71
>          Report Descriptors:
>            ** UNAVAILABLE **
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x81  EP 1 IN
>         bmAttributes            3
>           Transfer Type            Interrupt
>           Synch Type               None
>           Usage Type               Data
>         wMaxPacketSize     0x0006  1x 6 bytes
>         bInterval              10
>
> Bus 003 Device 004: ID 05e3:0610 Genesys Logic, Inc. 4-port hub
> Device Descriptor:
>   bLength                18
>   bDescriptorType         1
>   bcdUSB               2.00
>   bDeviceClass            9 Hub
>   bDeviceSubClass         0 Unused
>   bDeviceProtocol         2 TT per port
>   bMaxPacketSize0        64
>   idVendor           0x05e3 Genesys Logic, Inc.
>   idProduct          0x0610 4-port hub
>   bcdDevice           32.98
>   iManufacturer           0
>   iProduct                1
>   iSerial                 0
>   bNumConfigurations      1
>   Configuration Descriptor:
>     bLength                 9
>     bDescriptorType         2
>     wTotalLength           41
>     bNumInterfaces          1
>     bConfigurationValue     1
>     iConfiguration          0
>     bmAttributes         0xe0
>       Self Powered
>       Remote Wakeup
>     MaxPower              100mA
>     Interface Descriptor:
>       bLength                 9
>       bDescriptorType         4
>       bInterfaceNumber        0
>       bAlternateSetting       0
>       bNumEndpoints           1
>       bInterfaceClass         9 Hub
>       bInterfaceSubClass      0 Unused
>       bInterfaceProtocol      1 Single TT
>       iInterface              0
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x81  EP 1 IN
>         bmAttributes            3
>           Transfer Type            Interrupt
>           Synch Type               None
>           Usage Type               Data
>         wMaxPacketSize     0x0001  1x 1 bytes
>         bInterval              12
>     Interface Descriptor:
>       bLength                 9
>       bDescriptorType         4
>       bInterfaceNumber        0
>       bAlternateSetting       1
>       bNumEndpoints           1
>       bInterfaceClass         9 Hub
>       bInterfaceSubClass      0 Unused
>       bInterfaceProtocol      2 TT per port
>       iInterface              0
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x81  EP 1 IN
>         bmAttributes            3
>           Transfer Type            Interrupt
>           Synch Type               None
>           Usage Type               Data
>         wMaxPacketSize     0x0001  1x 1 bytes
>         bInterval              12
>
> Bus 003 Device 002: ID 05e3:0610 Genesys Logic, Inc. 4-port hub
> Device Descriptor:
>   bLength                18
>   bDescriptorType         1
>   bcdUSB               2.00
>   bDeviceClass            9 Hub
>   bDeviceSubClass         0 Unused
>   bDeviceProtocol         2 TT per port
>   bMaxPacketSize0        64
>   idVendor           0x05e3 Genesys Logic, Inc.
>   idProduct          0x0610 4-port hub
>   bcdDevice           44.01
>   iManufacturer           1
>   iProduct                2
>   iSerial                 0
>   bNumConfigurations      1
>   Configuration Descriptor:
>     bLength                 9
>     bDescriptorType         2
>     wTotalLength           41
>     bNumInterfaces          1
>     bConfigurationValue     1
>     iConfiguration          0
>     bmAttributes         0xe0
>       Self Powered
>       Remote Wakeup
>     MaxPower              100mA
>     Interface Descriptor:
>       bLength                 9
>       bDescriptorType         4
>       bInterfaceNumber        0
>       bAlternateSetting       0
>       bNumEndpoints           1
>       bInterfaceClass         9 Hub
>       bInterfaceSubClass      0 Unused
>       bInterfaceProtocol      1 Single TT
>       iInterface              0
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x81  EP 1 IN
>         bmAttributes            3
>           Transfer Type            Interrupt
>           Synch Type               None
>           Usage Type               Data
>         wMaxPacketSize     0x0001  1x 1 bytes
>         bInterval              12
>     Interface Descriptor:
>       bLength                 9
>       bDescriptorType         4
>       bInterfaceNumber        0
>       bAlternateSetting       1
>       bNumEndpoints           1
>       bInterfaceClass         9 Hub
>       bInterfaceSubClass      0 Unused
>       bInterfaceProtocol      2 TT per port
>       iInterface              0
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x81  EP 1 IN
>         bmAttributes            3
>           Transfer Type            Interrupt
>           Synch Type               None
>           Usage Type               Data
>         wMaxPacketSize     0x0001  1x 1 bytes
>         bInterval              12
>
> Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
> Device Descriptor:
>   bLength                18
>   bDescriptorType         1
>   bcdUSB               2.00
>   bDeviceClass            9 Hub
>   bDeviceSubClass         0 Unused
>   bDeviceProtocol         1 Single TT
>   bMaxPacketSize0        64
>   idVendor           0x1d6b Linux Foundation
>   idProduct          0x0002 2.0 root hub
>   bcdDevice            3.17
>   iManufacturer           3
>   iProduct                2
>   iSerial                 1
>   bNumConfigurations      1
>   Configuration Descriptor:
>     bLength                 9
>     bDescriptorType         2
>     wTotalLength           25
>     bNumInterfaces          1
>     bConfigurationValue     1
>     iConfiguration          0
>     bmAttributes         0xe0
>       Self Powered
>       Remote Wakeup
>     MaxPower                0mA
>     Interface Descriptor:
>       bLength                 9
>       bDescriptorType         4
>       bInterfaceNumber        0
>       bAlternateSetting       0
>       bNumEndpoints           1
>       bInterfaceClass         9 Hub
>       bInterfaceSubClass      0 Unused
>       bInterfaceProtocol      0 Full speed (or root) hub
>       iInterface              0
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x81  EP 1 IN
>         bmAttributes            3
>           Transfer Type            Interrupt
>           Synch Type               None
>           Usage Type               Data
>         wMaxPacketSize     0x0004  1x 4 bytes
>         bInterval              12
--
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