ASRock B450 Pro4 User Manual - Page 78
Launch Video OpROM Policy, not execute both legacy and UEFI option ROM.
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B450 Pro4 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. 73 English
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B450 Pro4
73
English
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.