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Chapter 3 - BIOS Utility 3-21
PS/2 Mouse Controller
This parameter enables or disables the onboard PS/2 mouse controller.
USB Host Controller
This parameter lets you enable or disable the USB controller on board. When enabled, it
activates the USB function of the system. When disabled, it deactivates the function.
USB Legacy Mode
This function, when enabled, lets you use a USB keyboard in a DOS environment. Set this to
Disabled
to deactivate the USB keyboard function in DOS environment. This parameter is
configurable only if the USB Host Controller parameter is enabled.
Onboard Audio Chip
This parameter lets you enable or disable the onboard audio controller. If you installed an
audio card into your system, you must disable this parameter for the card to work properly.