ASROCK D2123D4I4 User Manual page 62

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Bootup Num-Lock
If this item is set to [On], it will automatically activate the Numeric Lock function after
boot-up.
Boot Beep
Select whether the Boot Beep should be turned on or off when the system boots up. Please
note that a buzzer is needed.
Full Screen Logo
Use this item to enable or disable OEM Logo. The default value is [Enabled].
AddOn ROM Display
Enable AddOn ROM Display to see the AddOn ROM messages or configure the
AddOn ROM if you've enabled Full Screen Logo. Disable for faster boot speed.
CSM (Compatibility Support Module)
CSM
Enable to launch the Compatibility Support Module. Please do not disable unless
you're running a WHCK test.
Launch Other Storage OpROM Policy
Select UEFI only to run those that support UEFI option ROM only. Select Legacy only to
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