I have the same problem as Lukeyson. When I connect my slot-load dvd drive to mobo's usbs (using 2 usb cables: one for data and one for power) it works just fine. If I try to stick usb extension cables between the pc and the dvd - it won't work. I tried different usb extensions: cheap, expensive, repeater. Nothing worked. I also tried the powered USB hub, but that did not help either. The dvd was the only device connected to that hub.