[ltp] USB port colors, nonfunctional port on X220

James Macpherson linux-thinkpad@linux-thinkpad.org
Tue, 20 Sep 2011 21:04:26 -0400

On 09/20/2011 04:59 PM, Matt Jenny wrote:
> from some googling I think the Blue is USB 3.0, the Yellow is USB 
> 2.0 always on, and black is normal USB 2.0. try lsusb and see if a USB 
> 3.0 hub is listed. I am guessing at this because I have yet to work 
> with USB 3 but I think it should be listed the same as USB 2.0. Your 
> USB 3.0 hardware may not be supported yet.
I can confirm that the Yellow port is the always-on port.  I have the i5 
x220, which is without the USB3, and the blue port is the only cosmetic 
difference between the two.

A quick look at thinkwiki suggests that the USB 3 can be made to work at 
the expense of working suspend, and that the module might be 

Hope that helps!

- J