Csm Parameters - ASROCK Rack E3C246D4M-4L User Manual

3.6.1 CSM Parameters

CSM
Enable to launch the Compatibility Support Module. Please do not disable unless
you're running a WHCK test. If you are using Windows 8.1 64-bit and all of your
devices support UEFI, you may also disable CSM for faster boot speed.
Launch Other Storage OpROM Policy
Select UEFI only to run those that support UEFI option ROM only. Select Legacy only to
run those that support legacy option ROM only. Select Do not launch to not execute both
legacy and UEFI option ROM.
Launch Video OpROM Policy
Select UEFI only to run those that support UEFI option ROM only. Select Legacy
only to run those that support legacy option ROM only. Select Do not launch to not
execute both legacy and UEFI option ROM.
MEZZ1 Slot OpROM
This option controls Legacy/UEFI ROMs priority.
PCIE2 Slot OpROM
This option controls Legacy/UEFI ROMs priority.
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