MSI MS-98M9 Manual page 41

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.
▶ IOU0 (II0 PCIe Br1)
This item configures the PCIE2 port Bifuraction setting for a PCI-E port
specified by the user. The options are x4x4x4x4, x4x4x8, x8x4x4, x8x8, x16,
and Auto.
▶ IOU1 (II0 PCIe Br2)
This item configures the PCIE1 port Bifuraction setting for a PCI-E port
specified by the user. The options are x4x4x4x4 and x4x4x8.
▶ IOU2 (II0 PCIe Br3)
This item configures the PCIE4 port Bifuraction setting for a PCI-E port
specified by the user. The options are x4x4x4x4, x4x4x8, x8x4x4, x8x8, x16,
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