Csm Parameters - ASROCK B550D4ID-2L2T User Manual

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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 64-bit UEFI 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.
PCIE7 Slot OpROM
Use this item to select slot storage and Network Option ROM policy. In Auto option, the
default is Disabled with NVMe device, but it is Legacy with other devices. (This item can't
select Video Option ROM policy.)
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