Chapter 6: BIOS
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Maximum Read Request
Select Auto to allow the system BIOS to automatically set the maximum read request size
for a PCI-E device to enhance system performance. The options are
Auto
, 128 Bytes, 256
Bytes, 512 Bytes, 1024 Bytes, 2048 Bytes, and 4096 Bytes.
MMCFG Base
Use this feature to select the default value for the PCI MMIO (Memory-Mapped IO) base
address. The options are 1G, 1.5G, 1.75G,
2G
, 2.25G, and 3G.
NVMe Firmware Source
Use this item to select the NVMe firmware to support booting. The options are
Vendor
Defined Firmware
and AMI Native Support. The default option,
Vendor Defined Firmware
,
is pre-installed on the drive and may resolve errata or enable innovative functions for the
drive. The other option, AMI Native Support, is offered by the BIOS with a generic method.
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
and Offboard.
AOC-2UR6N4-i4XT SLOT1 PCI-E 3.0 X16 OPROM
For the three settings above, select Disabled to deactivate the selected slot, Legacy to acti-
vate the slot in legacy mode, and EFI to activate the slot in EFI mode. The default is
Legacy
.
RSC_U2N4-6 SLOT1 PCI-E x16 OPROM
Select Disabled to deactivate the selected slot, Legacy to activate the slot in legacy mode,
and EFI to activate the slot in EFI mode. The default is
Legacy
.
RSC_UMR-8 SLOT1 PCI-E 3.0 x8 OPROM
Select Disabled to deactivate the selected slot, Legacy to activate the slot in legacy mode,
and EFI to activate the slot in EFI mode. The default is
Legacy
.
RSC_UMR-8 M.2_PCIe OPROM
Select Disabled to deactivate the selected slot, Legacy to activate the slot in legacy mode,
and EFI to activate the slot in EFI mode. The default is
Legacy
.
Bus Master Enable
This setting enables the bus master attribute fo DMA transactions. The options are
Enabled
and Disabled.
Onboard LAN Device
This setting
Enables
or Disables the onboard LAN device.
Onboard LAN1 Option ROM
Onboard LAN2 Option ROM
