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PCIe Configuration#

PCIe Config

Above 4G Decoding

Whether to enable 64bit capable devices to be decoded in Above 4G Address Space (only if system supports 64bit PCI decoding).

Options:

  1. Enabled - Default.
  2. Disabled.
SR-IOV Support

Whether to enable Single Root IO Virtualization Support.

Assumes system has SR-IOV capable PCIe Devices.

Options:

  1. Disabled - Default.
  2. Enabled.
WMI Setting name Values SVP or SMP Req'd AMD/Intel
SRIOVSupport Disable, Enable yes AMD
ASPM Support
When set to Auto, configures ASPM automatically according to what each device supports.

Options:

  1. Disabled - Default.
  2. Auto.
WMI Setting name Values SVP or SMP Req'd AMD/Intel
ASPMSupport Disabled,Auto yes AMD

Enabling ASPM may cause some PCIe devices to fail.

Extended Synch

Whether to allow generation of Extended Synchronization patterns.

Options:

  1. Disabled - Default.
  2. Enabled.
Link Training Timeout (uS)

How many microseconds software will wait before polling 'Link Training' bit in Link Status register.

Value range: 10 to 10000 μs.

Options:

  1. 1000
Unpopulated Links
When Disabled, unpopulated PCI Express links are disabled to save power.

Options:

  1. Keep Link ON
  2. Disabled

PCIe Slot{X} Status#

PCIe Port

Whether to enable this PCIe port.

Options:

  1. Enabled - Default.
  2. Disabled.
WMI Setting name Values SVP or SMP Req'd AMD/Intel
PCIeSlotXPort Disable, Enable yes AMD

In the WMI class name, X represents the slot number, from 1 to 6.

PCIe Port Bifurcation

Select PCIe port bifurcation.

If Auto, system will auto-configure PCIe port bifurcation and auto-detect Quad M.2 PCIe Card.

Options:

  1. x4x4
  2. x4x4x4x4
  3. x4x4x8
  4. x8x4x4
  5. x8
  6. x8x8
  7. x16
  8. Auto - Default.
WMI Setting name Values SVP or SMP Req'd AMD/Intel
PCIeSlotXBifurcation Auto, x4x4x4x4, x8x8, x16 yes AMD

In the WMI class name, X represents the slot number, from 1 to 6.

Link Speed

Options:

  1. Auto - Default.
  2. Auto, Gen 1 (2.5 GT/s)
  3. Gen 2 (5 GT/s)
  4. Gen 3 (8 GT/s)
  5. Gen 4 (16 GT/s)
WMI Setting name Values SVP or SMP Req'd AMD/Intel
PCIeSlotXLinkSpeed Auto, Gen 1 (2.5 GT/s), Gen 2 (5 GT/s), Gen 3 (8 GT/s), Gen 4 (16 GT/s) yes AMD

In the WMI class name, X represents the slot number, from 1 to 6.

M.2 Slot{Y} Status#

M.2 Port

Whether to enable this M.2 port.

Options:

  1. Enabled - Default.
  2. Disabled.
WMI Setting name Values SVP or SMP Req'd AMD/Intel
M2SlotXPort Disable, Enable yes AMD

In the WMI class name, X represents the slot number, 1 or 2.

M.2 Link Speed

Options:

  1. Auto - Default.
  2. Auto, Gen 1 (2.5 GT/s)
  3. Gen 2 (5 GT/s)
  4. Gen 3 (8 GT/s)
  5. Gen 4 (16 GT/s)
WMI Setting name Values SVP or SMP Req'd AMD/Intel
M2SlotXLinkSpeed Auto, Gen 1 (2.5 GT/s), Gen 2 (5 GT/s), Gen 3 (8 GT/s), Gen 4 (16 GT/s) yes AMD

In the WMI class name, X represents the slot number, 1 or 2.

M.2 DLF Support

Options:

  1. Enabled - Default.
  2. Disabled.