what color is usb ports
Re: USB port colors, nonfunctional port on X220. 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.