Acer 6000 - Manual (Page 65)

AcerPower 6000 User’s Guide 3-18
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.