Artesyn ATCA-8310 Installation and Use (May 2014) - Manual (Page 141)

BIOS
ATCA-8310 Installation and Use (6806800M72E) 141
5.3.3.1.2 PEG Port Configuration
Figure 5-28 PEG Port Configuration
Table 5-29 PEG Port Configuration
Field Description
Always Enable PEG To enable the PEG slot.
Force X1 Force PEG link to retrain to X1 mode.
ASPM Control ASPM support for the PEG Device. This has no effect if PEG is not
the currently active device.
Automatic ASPM Automatically enable ASPM based on reported capabilities and known
issues.
Extended Synch Enable PCIe Extended Synchronization for Logic Analyzer use.