Avalue Technology EMX-QM67 User Manual page 89

 PEG2 – Gen X
Configure PEG2 B0 :D1 :F2 Gen1-Gen2
Configuration options: [Auto] [Gen1] [Gen2]
 PEG3 – Gen X
Configure PEG3 B0 :D1 :F3 Gen1-Gen2
Configuration options: [Auto] [Gen1] [Gen2]

Always Enable PEG[Disable]
To Enable the PEG slot.
Configuration options: [Disabled] [Enabled]

PEG ASPM[ASPM L0sL1]
Control ASPM support for the PEG device.
Configuration options: [Disabled] [Auto] [L0s] [L1] [L0sL1]

ASPM L0s[Both Boot and Endpoint Ports]
Enable PCIe ASPM L0s.
Configuration options: [Boot Port only] [Endpoint Port only] [Both Boot and Endpoint Ports]

De-emphasis Control[-3.5 dB]
Configure the De-emphasis control on PEG.
Configuration options: [-6 dB] [-3.5 dB]
EMX-QM67 User's Manual
EMX-QM67 User's Manual 89