I believe that it makes the USB keyboard appear like a "legacy" PS/2 keyboard, at least until the OS takes over.
Volker Kuhlmann wrote on 21/12/06 00:04: >> Look for a "USB Legacy Keyboard" option or similar in your BIOS... > > What exactly does this option do? Not every bios has this option, and on > one box where there was such an option it did nothing to make the usb > keyboard work. > > Volker >
