I have USB2 ports on my rear panel and they work OK at USB2 speed. I also have 2 front panel USB connectors on the front panel of the case and have just connected them to the motherboard (Shuttle MV43V). I'm using XP2 SP2.
The front panel USB ports appear to only operate at USB speed because any USB device I plug in generates a message to say that the device will operate faster on a USB2 port.
Any ideas why these front ports are not seen as USB2?
Most of the motherboards where I have wired up front panel USB sockets have one or more 10 pin arrangements (usually called JUSB1 etc.) sticking up from the mother board. One of the pins - pin 9 is always omitted as there is no connection to this pin. On the same side of pin 9 are pins 1,3,5,7 and opposite them are 2,4,6,8,10.
The wires from the front sockets are generally colour coded. Pins 1-2 are USB power - red Pins 7-8 are ground - black.
From this you should be able to work out if you have connected your front panel wires the correct way round. But I doubt if this is your problem if your USB peripheral is working after you plug it in.
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