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3.3.7
CSM Configuration
CSM Support
Allows you to enable or disable CSM (Compatibility Support Module) Support. Configuration
options: [Disabled] [Enabled]
The following items appear only when you set CSM Support to [Enabled].
GateA20 Active
Configuration options: [Upon Request] [Always]
[Upon Request]
[Always]
Network
Allows you to control the execution of UEFI and Legacy Network OpROM.
Configuration options: [Do not lauch] [UEFI] [Legacy]
Storage
Allows you to control the execution of UEFI and Legacy Storage OpROM.
Configuration options: [Do not lauch] [UEFI] [Legacy]
Video
Allows you to control the execution of UEFI and Legacy Video OpROM. Configuration
options: [Do not lauch] [UEFI] [Legacy]
Other PCI devices
Allows you to determine OpROM execution policy for devices other than Network,
Storage, or Video. Configuration options: [Do not lauch] [UEFI] [Legacy]
3.3.8
Super IO Configuration
Serial Port 1 Configuration
This item allows you to set parameters of Serial Port 1 (COMA).
Serial Port
Allows you to enable or disable the serial port (COM). Configuration options: [Disabled]
[Enabled]
COM1 Control
Allows you to select COM1 mode. Configuration options: [RS232] [RS422] [RS485]
3-10
GA20 can be disabled using BIOS services.
Do not allow disabling GA20, which functions when any RT
code is executed above 1MB.
Chapter 3: BIOS setup
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