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Chapter 6: UEFI BIOS
Power Limit Value
Use this feature to set the upper limit on the power supplied by the PCIE slot. Press "+"
or "-" on your keyboard to change this value. The default setting is 75.
Power Limit Scale
Use this feature to select the scale used for the slot power limit value. The options are
1.0x, 0.1x, 0.01x, 0.001x.
Physical Slot Number
Use this feature to set the physical slot number attached to this port. The values are
0-8191. The default value is 1.
Max Payload Size
Use this feature to select the PEG0 maximum payload size. The options are Auto, 128,
256 TLP.
CPU SLOT1 PCIE 3.0 X8
Enable Root Port
Use this feature to enable or disable the PCI Express Graphics (PEG) device in the port
specified by the user. The options are Disabled, Enabled, and Auto.
Max Link Speed
Use this feature to select speed for the device installed in the specified port. The options
are Auto, Gen 1, Gen 2, and Gen 3.
Max Link Width
Use this feature to enable the PCI-E ASPM L0S. The options are Auto, Force X1, Force
X2, and Force X4.
ASPM (Available if graphics card is detected)
Use this feature to activate 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, Auto, ASPM L0s, ASPM L1, ASPM L0sL1.
De-emphasis Control
Use this feature to configure the De-emphasis control on PEG. The options are -6 dB
and -3.5dB.
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