On Sun, 3 Feb 2013, Richard Genoud wrote:

> [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)

> 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/

Maybe you could return it or exchange.  Clearly it is not working 
properly.  Not even under Windows, which is usually all that vendors 
care about.

Alan Stern

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