On Sat, 29 Feb 2020, James wrote: > > > On 2020-02-29 6:05 p.m., Alan Stern wrote: > > On Sat, 29 Feb 2020, James wrote: > > > >> I forgot sudo. > >> > >> This looks like the interface is USB 3 but the device internals are USB 2. > >> Does that make sense? > > No. > What does "SuperSpeed USB Device Capability:" mean? According to the spec: "the required device-level capabilities descriptor which shall be implemented by all SuperSpeed devices". > >> SuperSpeed USB Device Capability: > >> bLength 10 > >> bDescriptorType 16 > >> bDevCapabilityType 3 > >> bmAttributes 0x00 > >> wSpeedsSupported 0x0006 > >> Device can operate at Full Speed (12Mbps) > >> Device can operate at High Speed (480Mbps) > >> $ sudo lsusb -v -d 0bda:b812 > >> > >> Bus 003 Device 002: ID 0bda:b812 Realtek Semiconductor Corp. 802.11ac NIC > >> Device Descriptor: > >> bLength 18 > >> bDescriptorType 1 > >> bcdUSB 2.10 > >> bDeviceClass 0 > >> bDeviceSubClass 0 > >> bDeviceProtocol 0 > >> bMaxPacketSize0 64 > >> idVendor 0x0bda Realtek Semiconductor Corp. > >> idProduct 0xb812 > >> bcdDevice 2.10 > > These are exactly the same vendor, product, and serial IDs as the first > > device. So you should expect them to be the same. > > > > Alan Stern > > > I have another one on order, hopefully it is better. > It might have the same USB id but I know it seems like a better vendor > (Netis). If it's from a different vendor then it will have a different vendor ID. Alan Stern
