[CentOS] USB 2.0 device on a USB 3.0 plug

Fri Feb 17 14:19:53 UTC 2017
Johnny Hughes <johnny at centos.org>

On 02/16/2017 11:58 AM, Jerry Geis wrote:
> When I plug in my device which is USB 2.0 into a 3.0 slot (cause that is
> all I have)
> [495042.943074] usb 5-2: new low-speed USB device number 6 using xhci_hcd
> [495043.100076] usb 5-2: device descriptor read/64, error -71
> 
> I receive the above error.
> 
> Is there a flag or setting that tells the USB to in a 2.0 mode ?

You should be able to use USB2 devices in a USB3 port with no issues, as
others have said, they use different pins and both are there.

I have never seen anyone have to do anything to use USB2 devices on a
USB3 port except plug it in.


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