None of the USB ports work, not even in the bios...
I bought this motherboard for $70 used (knowing about the USB problem) and none of the ports work (both USB 2.0 and 3.0), not even my case's ports work. I'm able to get around the computer using a PS2 keyboard and an iPhone app as a touchpad.
There's power coming out of all ports (can charge phone from them) and I hope this is a hardware problem. Latest bios (1.80) is installed. Specs: MOBO:Asrock Z77 Extreme4-m PSU: 650W Seasonic G-650 80Plus Gold CPU: Intel Core i5 3570k, stock cooler RAM: HyperX Fury 4gb 1600mhz GPU: AMD HD7850 2gb HDD: 320gb Seagate Barracuda 7200rpm