User Manual
Chapter 4
AMI UEFI BIOS Setup
54
BIOS Setting
Description
Setting
Option
Effect
CSM Support
The Compatibility
Support Module (CSM) is
a component of the UEFI
firmware that provides
legacy BIOS compatibility
by emulating a BIOS
environment, allowing
legacy operating systems
and some option ROMs
that do not support UEFI
to still be used.
Enabled/
Disabled
Enable or disable
the Compatibility
Support Module
GetaA20 Active
Activate GetaA20
Upon
Request
Enable or disable
this function
Option ROM
Messages
Receiving ROM
Messages Settings
Force
BIOS
Set ROM
messages
parameters
Network
Specifies which Network
option ROM is booted
UEFI
Only UEFI option
ROMs are booted
Legacy
Storage
Specifies which Storage
option ROM is booted
UEFI
Only UEFI option
ROMs are booted
Legacy
Only Legacy
option ROMs are
booted