Abit OnChip PCI Device:

BIOS Setup 3-15
 OnChip PCI Device:
Click <Enter> key to enter its submenu:
OnChip USB Controller:
This option enables or disables the USB controller.
 USB 2.0 Controller:
This option enables or disables the USB 2.0 controller.
 USB Keyboard Support Via:
This item allows you to select [BIOS] for using USB keyboard in DOS environment, or [OS] in OS
environment.
 USB Mouse Support Via:
This item allows you to select [BIOS] for using USB mouse in DOS environment, or [OS] in OS
environment.
OnChip Audio Controller:
This option enables or disables the audio controller.
User’s Manual