USER MANUAL
CHAPTER 4
AMI UEFI BIOS SETUP
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4.2.2.8 CSM Configuration
Compatability Support Module Configuration.
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 to use
legacy OS and
some option ROMs
that do not
support UEFI.
Enabled/
Disabled
Enable or disable
the Compatibility
Support Module
GetaA20 Active
Activate GetaA20
Upon Request
Enable or disable