MSI MS-9A95 WindBOX IV Advanced Manual page 36

BIOS Setup
▶ PCI/PCIE Device Configuration
▶ Legacy USB Support
Set to [Enabled] if you need to use any USB 1.1/2.0 device in the operating
system that does not support or have any USB 1.1/2.0 driver installed, such
as DOS and SCO Unix.
▶ Audio Controller
This setting enables/disables the onboard audio controller.
▶ Launch OnBoard LAN OpROM
These settings enable/disable the initialization of the onboard/onchip LAN
Boot ROM during bootup. Selecting [Disabled] will speed up the boot process.
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