Figure 5.12Csm Configuration - Advantech ARK-2231R-S9A1E User Manual

5.2.2.9 CSM Configuration
CSM Support

Enable/Disable CSM support.
 GateA20 Active
Upon Request - GA20 can be disabled using BIOS services otherwise GA20
cannot be disabled; this option is useful when any RT code is executed above 1
MB.
Option ROM Messages

Set display mode for Option ROM.
 OS Selection
OS Selection.
Boot option filter

This option controls Legacy/UEFI ROM priority.
 Network
Controls the execution of UEFI and Legacy PXE OpROM.
Storage

Controls the execution of UEFI and Legacy Storage OpROM.
 Video
Controls the execution of UEFI and Legacy Video OpROM.
Other PCI devices

Determines OpROM execution policy for devices other than networks, storage,
or video.
ARK-2231R User Manual
Figure 5.12 CSM Configuration
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