Beckhoff CB1056 Manual page 85

Chipset
 Hot Plug
Options: Disabled / Enabled
 PCIe Speed
Options: Auto / Gen1 / Gen2
 Extra Bus Reserved
Options: 0...7
 Reserved Memory
Options: 1...20
 Prefetchable Memory
Options: 1...20
 Reserved I/O
Options: 4 / 8 / 12 / 16 / 20
Beckhoff New Automation Technology CB1056
Chapter: BIOS Settings
page 85