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Chapter 4: BIOS
NVMe Firmware Source
This feature determines the lowest MMCFG (Memory-Mapped Configuration) base assigned
to PCI devices. The options are Vendor Defined Firmware and AMI Native Support.
VGA Priority
Use this item to select the graphics device to be used as the primary video display for system
boot. The options are Onboard Offboard, and Auto.
PCH SLOT 2 PCI-E 3.0 x4 OPROM
Select The options are Disabled, Legacy, and EFI.
PCH SLOT 3 PCI-E 3.0 x4 OPROM
Select Disabled to deactivate the selected slot. Select Legacy to enable the slot for use of
legacy devices. The options are Disabled, Legacy, and EFI.
Bus Master Enable
This feature enables a device connected to the bus to initiate Direct Memory Access (DMA)
transactions. When Disabled is selected, the PCI Bus Driver disables Bus Master Attribute
for Pre-Boot DMA Protection. When Enabled is slected, the PCI Bus Driver enables Bus
Master Attribute for DMA transactions. Some devices request Bus Master to be enabled for
operations. The options are Disabled and Enabled.
Onboard LAN Device
This feature allows the user to Enable or Disable Onboard LAN devices. The options are
Auto, Enabled, and Disabled.
Onboard LAN Option ROM Type
Use this to select firmware type to be loaded for onboard LANs. The options are Legacy
and EFI.
Onboard LAN1 Option ROM
Use this feature to select the type of device installed in LAN Port1 used for system boot. The
options are Legacy, EFI and Disabled.
Onboard LAN2 Option ROM
Use this feature to select the type of device installed in LAN Port2 used for system boot. The
options are Legacy, EFI and Disabled.
Onboard Video Option ROM
Use this feature to select the Onboard Video Option ROM type. The options are Disabled,
Legacy and EFI.
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