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Chapter 4: BIOS

PCIe/PCI/PnP Conguration

The following PCI information will be displayed:

• PCI Bus Driver Version

• PCI Devices Common Settings:

Above 4G Decoding (Available if the system supports 64-bit PCI decoding)

Select Enabled to decode a PCI device that supports 64-bit in the space above 4G Address.

The options are Enabled and Disabled.

SR-IOV Support (Available if the system supports Single-Root Virtualization)

Select Enabled for Single-Root IO Virtualization support. SR-IOV is an extension of the PCI

Express interface and consists of two functions: physical functions (PF) and virtual functions

(VF). PF is the primary function and is used to control and congure PCI Express devices,

whereas VF is the lightweight function that offers limited conguration. The options are

Enabled and Disabled.

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, 256 Bytes, 512

Bytes, 1024 Bytes, 2048 Bytes, and 4096 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

conguration. Select Disabled to disable ASPM support. The options are Disabled, Auto,

and Force L0s.

Warning: Enabling ASPM support may cause some PCI-E devices to fail!

ARI Forwarding

When this feature is enable, the Downstream port disables its traditional device number to 0

when turning Type1 Conguration Request into a Type0 Conguration Request. The options

are Disabled and Enabled.

CPU SLOT7 PCI-E 3.0 X4 OPROM

Use this item to select the rmware type for the add-on card for this slot. The options are

Disabled, Legacy, and EFI.

Supermicro A2SDi-H-TF User Manual

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