USB Mouse Support

This parameter enables or disables the use of a USB keyboard outside of Windows. The default is Disabled. It is not configurable if Onboard USB is set to Disabled.

IDE Drives Setup

IDE Prefetch Mode

The default setting is Enabled. IDE prefetch mode can improve performance of your system for fast drive accesses. If install a primary and/or secondary add-in IDE interface, set this field to Disabled if the interface does not support prefetch.

Audio Setup

Onboard Sound

This parameter enables or disables the onboard audio controller chipset. This item does not appear in the menu if there is no physical audio chipset on the system board. The default setting is Enabled.

Onboard Legacy Audio

This parameter enables or disables the onboard audio controller chipset to function in DOS environment. The default is Enabled.

IMPORTANT: When onboard legacy audio is set to Enabled, the below six parameters can be configurabled as I/O base address and IRQ assignment and so on.

Sound Blaster

The default is Disabled.

SB I/O Base Address

The default is set to 220H.

SB IRQ Select

The default is IRQ5.

MPU-401 --Enabled

The default is Enabled.

General Information 19

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IBM 2274 USB Mouse Support, IDE Prefetch Mode, Onboard Sound, Onboard Legacy Audio, Sound Blaster, SB I/O Base Address