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Link Speed
Use this feature to select the link speed for the PCIe port specified by the user. The op-
tions are Auto, Gen 1 (2.5 GT/s), Gen 2 (5 GT/s), Gen 3 (8 GT/s), and Gen 4 (16 GT/s).
The following information is displayed:
•
PCIe Port Link Status
•
PCIe Port Link Max
•
PCIe Port Link Speed
Data Link Feature Exchange
Use this feature to enable/disable the PCIe port to enter PCIe 4.0 DL_Feature negotia-
tion state. The options are Disable and Enable.
DMI Port MPSS
Use this feature to set the maximum payload size supported in Direct Media Interface
(DMI) device capabilities register for the device installed in the PCIe port. The options
are 128B, 256B, and Auto.
Equalization Support
When this feature is set to Enable, the Equalization Bypass will be supported at the
highest rate. The options are Enable and Disable.
IOAT Configuration
Relaxed Ordering
Select Yes to allow certain transactions to be processed and completed before other
transactions that have already been enqueued. The options are No and Yes.
Intel VT for Directed I/O (VT-d)
Intel® VT for Directed I/O (VT-d)
Select Enable to use Intel Virtualization Technology for Direct I/O VT-d support by report-
ing the I/O device assignments to the Virtual Machine Monitor (VMM) through the DMAR
ACPI tables. This feature offers fully-protected I/O resource sharing across Intel platforms,
providing greater reliability, security and availability in networking and data-sharing. The
options are Enable and Disable.
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Chapter 4: UEFI BIOS
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