Supermicro 1028-WTNR(T) User Manual page 107

Chapter 7: AMI BIOS
Maximum Payload
Select Auto for the system BIOS to automatically set the maximum payload value
for a PCI-E device to enhance system performance. The options are Auto, 128
Bytes, and 256 Bytes.
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.
ASPM Support
Use this item to set the Active State Power Management (ASPM) level for a PCI-E
device. Select Auto for the system BIOS to automatically set the ASPM level based
on the system configuration. Select Disabled to disable ASPM support. The options
are Disabled, and Auto.
Warning: Enabling ASPM support may cause some PCI-E devices to fail!
MMIOHBase
Use this item to select the base memory size according to memory-address map-
ping for the IO hub. The base memory size must be between 4032G to 4078G. The
options are 56T, 48T, 24T, 512G, and 256G.
MMIO High Size
Use this item to select the high memory size according to memory-address mapping
for the IO hub. The options are 256G, 128G, 512G, and 1024G.
Onboard LAN Option ROM Type
Select Enabled to enable Option ROM support to boot the computer using a device
installed on the slot specified by the user. The options are Legacy and EFI.
Onboard LAN1 Option ROM/Onboard LAN2 Option ROM
Use this option to select the type of device installed in LAN Port1 or LAN Port2
used for system boot. The default setting for LAN1 Option ROM is PXE, and t for
LAN2 Option ROM is Disabled.
Onboard NVMe1 Option ROM/Onboard NVMe2 Option ROM
Use this option to select the type of device installed in NVMe Connector 1 or NVMe
Connector 2 used for system boot. The options are Disabled and EFI.
Onboard Video OPROM
This feature controls how the system executes UEFI (Unified Extensible Firmware
Interface) and Legacy Video OPROM. Select Legacy to boot the system using
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