I am currently using an ASRock z77 Pro 3. One of the features that comes with this motherboard is XFast USB. After installing XFast USB, my USB 3.0 ports on the back panel of my PC did not work, so I uninstalled the program. After a quick restart, it still did not function. Then I tried multiple different USB devices being pluged into the same 2 USB 3.0 ports (trying multiple different types of USB cords) still to no avail. Anyone have any suggestions?