I have installed Win98 on the P4SGR, and got an exclaimation mark (!) next to USB device in the Device Manager, how can I solve this?
This is from the onboard USB 2.0 controller. Microsoft doesn't support USB 2.0 for Win98, thus you can only use USB 1.0 peripherals. If you'd like to utilize USB 2.0, please use Windows 2000 or newer.