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User Manual
3.2.2.10 CSM Configuration
BIOS Setting
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.
GetaA20
Activate GetaA20
Active
Option ROM
Receiving ROM Messages Settings
Messages
Network
Specifies which Network option
ROM is booted
Chapter 2
Description
Hardware Installation
Setting
Option
Enabled/
Enable or
Disabled
disable the
Compatibility
Support
Module
Upon
Enable or
Request
disable this
function
Force BIOS
Set ROM
messages
parameters
UEFI
Only UEFI
option ROMs
Effect
52
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