ASROCK IMB-A182P User Manual page 36

CSM (Compatibility Support Module)
CSM
Enable to launch the Compatibility Support Module. If you are using
Windows 8.1 / 8 64-bit UEFI and all of your devices support UEFI,
you may also disable CSM for faster boot speed.
Launch PXE 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 op-
tion ROM.
Launch 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 op-
tion 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 op-
tion ROM.
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