I just completed my build yesterday. Gigabyte GA-MA785GMT-UD2H, Phenom II 720, 4GB Crucial DDR3-1333.
I installed Windows XP 32-bit to test everything out. Installed all service packs and updates. I installed the Gigabyte motherboard drivers from the supplied CD.
When I plug in a 2.0 USB device it tells me that it'd be faster if I plugged it into a USB 2.0 port. It doesn't matter if I plug in from the header USB port on the MB (through front of the case) or the rear USB ports on the mobo. So, I'm not running USB 2.0 I assume. The Hardware Profile page in XP has a "?" over Other Devices and lists Universal Serial Bus (USB).
So, I'm trouble shooting what's wrong. Does it sound like I'm just missing a proper driver or something? I'm wondering if there's be any hardware issue. Like, if I have a USB mouse plugged in it'll default all USB to 1.1 or maybe some BIOS setting needs to be updated?