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Chapter 6: BIOS
SR-IOV Support (Available if the system supports Single-Root Virtualization)
Select Enabled for Single-Root IO Virtualization support. The options are Enabled and
Disabled.
MMIO High Base
Use this feature to select the base memory size according to memory-address mapping for
the IO hub. The base memory size must be between 4032G to 4078G. The options are 56T,
40T, 24T, 16T, 4T, and 1T.
MMIO High Granularity Size
Use this feature to select the high memory size according to memory-address mapping for
the IO hub. The options are 1G, 4G, 16G, 64G, 256G, and 1024G.
PCI PERR/SERR Support
Use this feature to enable or disable the runtime event for SERR (System Error)/ PERR (PCI/
PCI-E Parity Error). The options are Disabled and Enabled.
Maximum Read Request
Select Auto for the system BIOS to automatically set the maximum size for a read request
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
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
This feature selects the graphics device to be used as the primary video display for system
boot. The options are Auto, Onboard and Offboard.
Onboard Video Option ROM/RSC-R2UW-4E8Option ROM/RSC-R1UW-E8ROption
ROM/AOC-2UR68-m2TSOption ROM/RSC-S2-66Option ROM/Front Ultra Option ROM
Use this feature to select the Onboard Video Option ROM type. The options are Disabled,
Legacy and EFI.
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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