ASROCK Z370 User Manual page 74

Restore on AC/Power Loss
Select the power state after a power failure. If [Power Off] is selected, the power will
remain off when the power recovers. If [Power On] is selected, the system will start
to boot up when the power recovers.
Turn On LED in S5
Turn on LED in the ACPI S5 state.
BIOS Backup Switch
Enable/Disable BIOS Backup Function.
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