[previously] I tried to use this device : usb3.0 HDD dock ( http://www.icydock.com/goods.php?id=130 ) based on JMicron JMS539 chipset. It's always recognized as an usb2.1 device instead of USB3. My USB3 controller is based on VIA VL800 B3. Same controller and same device on windows7 is also recognized as USB2.1. [/previously] I did some tests with other controllers (NEC uPD720200 and Fresco Logic FL1009) 06:00.0 USB controller: NEC Corporation uPD720200 USB 3.0 Host Controller (rev 04) (prog-if 30 [XHCI]) Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx+ Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- 04:00.0 USB controller: Fresco Logic FL1009 USB 3.0 Host Controller (rev 02) (prog-if 30 [XHCI]) Subsystem: Fresco Logic Device 0000 Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx+ Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Long story short, the icy dock device is still recognized as USB2.1 with those controllers. (The kern.log with usb debug is attached). I'm not sure that there's anything else to do... it seems that the icy dock only works in USB3 when it's benchmarked on websites, with SSD drives :( cf http://www.thinkcomputers.org/icy-dock-mb881u3-1sa-ez-dock-review/3/ Best regards, Richard.
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