All usb connection to this motherboard, including onboard, and case usb's are using the most recent usb 2.0 driver I could find, ( OEM CD ) However I have a 30gb usb hard drive (laptop hard drive) I am using to backup probably about 10gb of music to bring to work. And it randomly gives me a delayed write error and then proceeds to unmount the drive. At first I just thought the cables from the case USB to the mobo were comming off, BUT the onboard USB slots at the back of the mobo are doing the exact same thing. I am doubting it's a bad usb hard drive because I reformatted it and copied the same data from another machine and it was fine. Any takers?