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Chapter 6: BIOS
PEG Port Configuration
CPU SLOT6 PCI-E 3.0 x8 (in x16) / CPU SLOT5 PCI-E 3.0 x4 (in x8) / CPU SLOT4
PCI-E 3.0 x4 (in 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 configure the link speed of a PCI-E port specified by the user. The
options are Auto, Gen1, Gen2, and Gen3.
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, and 0.001x.
Physical Slot Number
Use this feature to set the physical slot number attached to this port. Press "+" or "-" on
your keyboard to change the setting to a value between 0-8191. The default setting is 1
for CPU SLOT6, 2 for CPU SLOT5, and 3 for CPU SLOT4.
Max Payload Size
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, and 256 TLP.
Program PCIe ASPM After OPROM
PCIe ASPM, the Active State Power Management for PCI-Express slots, is a power
management protocol used to manage power consumption of serial-link devices installed
on PCI-E slots during a prolonged off-peak time. If this feature is set to Enabled, PCI-E
ASPM will be programmed after OPROM. If this feature is set to Disabled, the PCI-E
ASPM will be programmed before OPROM. The options are Disabled and Enabled.
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