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Chapter 6: BIOS
MMCFG Base
This feature determines the lowest MMCFG (Memory-Mapped Configuration) base assigned
to PCI devices. The options are 1G, 1.5G, 1.75G. 2G, 2.25G, and 3G.
VGA Priority
Use this item to select the graphics device to be used as the primary video display for system
boot. The options are Auto, Onboard and Offboard.
PCI Devices Option ROM Settings
Onboard NVME1/NVME2 OPROM
Select EFI to allow the user to boot the computer using an EFI (Expansible Firmware Interface)
device installed on the NVME connector specified by the user. Select Legacy to allow the
user to boot the computer using a legacy device installed on the NVME connector specified
by the user. The options are Disabled, Legacy and EFI.
CPU1 Slot 1 PCI-E x8 OPROM/CPU1 Slot 2 PCI-E x16 OPROM/CPU1 Slot 3 PCI-E x8
OPROM/CPU2 Slot 4 PCI-E x16 OPROM/CPU2 Slot 5 PCI-E x16 OPROM/CPU2 Slot 6
PCI-E x16 OPROM/
Select EFI to allow the user to boot the computer using an EFI (Expansible Firmware Interface)
device installed on the PCI-E slot specified by the user. Select Legacy to allow the user to
boot the computer using a legacy device installed on the PCI-E slot specified by the user. The
options are Disabled, Legacy and EFI. (Note: Riser card names may differ in each system.)
Onboard Video Option ROM
Use this feature to select the Onboard Video Option ROM type. The options are Disabled,
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.
Network Stack Configuration
Network Stack
Select Enabled to enable PXE (Preboot Execution Environment) or UEFI (Unified Extensible
Firmware Interface) for network stack support. The options are Enabled and Disabled.
*If "Network Stack" is set to Enabled, the following items will display:
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