M1 Server BIOS Power-On After AC Loss

The M1 Server factory default is S5 State Power OFF: the system stays off when AC power returns.

BIOS path

IntelRCSetup > South Bridge Chipset Configuration > IQAT Configuration > State After G3

• S0 State: power on when AC returns.
• S5 State: stay off when AC returns.
• Last State: restore the state before the power loss.

Without a CMOS battery, the system can start directly when power is applied and does not require this setting.