Chapter 5 BIOS Setup
BA-2501 SERIES USER MANUAL
Page: 5-40
PCH-IO Configuration – PCI Express Configuration – PCI Express x4 slot
Menu Path
Chipset > PCH-IO Configuration > PCI Express
Configuration > PCI Express x4 slot
PCI Express x4 slot Screen
BIOS Setting
Options
Description/Purpose
Mini PCI Express Port
- Disabled
- Enabled
Controls the PCI Express Root Port.
ASPM
- Disabled
- L0s
- L1
- L0sL1
- Auto
Sets the ASPM (Active-State Power
Management) Level. The option allows
users to set the lower power mode that
activates when the bus is not being used.
L1 Substates
- Disabled
- L1.1
- L1.2
- L1.1 & L1.2
PCI Express L1 Substates settings.
Hot Plug
- Disabled
- Enabled
Enables or Disables PCI Express Hot
Plug.
PCIe Speed
- Auto
- Gen1
Selects PCI Express port speed.