Ah, what computer you have? must be very old one!! as I remember, 82801 South Bridge use to come with Intel 815 chipset. means, Pentium III Arena.
and it will be with USB 1.1, so there is so far NO way that you can have USB 2.0 in this motherboard. a possible solution is, that you buy a PCI USB card, it may will accommodate USB 2.0 interface.