Advantech AIMB-286EF User Manual page 86

M.2 E-key slot
 M.2 E-Key slot [ Enabled ]
Control the M.2 E-Key Root Port.
 ASPM 4 [Disabled]
Set the ASPM Level: Force L0s - Force all links to L0s State : AUTO - BIOS
auto configure: DISABLE - Disables ASPM
 L1 Substates [Disabled]
 Hot Plug [Disabled]
 Advanced Errors Reporting [Disabled]
 PCIE Speed [Auto]
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