Asus TUF Z270 MARK 2 Bios Manual page 42

1.6.2 Platform Misc Configuration
PCI Express Native Power Management
This item allows you to enhance the power saving feature of PCI Express and perform ASPM
operations in the operating system.
The following item appears only when you set the PCI Express Native Power Management
to [Enabled].
Native ASPM
[Enabled]
[Disabled]
PCH - PCI Express
PCH DMI ASPM
This item allows you to control the Active State Power Management on both NB
(NorthBridge) and SB (SouthBridge) side of the DMI Link.
ASPM
This item allows you to select the ASPM state for energy-saving conditions.
42
OS Controlled ASPM.
BIOS Controlled ASPM.
ASUS TUF Z270 MARK 2 BIOS Manual