Connects to pins 5 and 7. Orientation does not matter because it is a momentary switch. This controls the main chassis power button.
A 4-pin PWM header located near the CPU socket to ensure thermal management. FOXCONN ML194V-0 MOTHERBOARD MANUAL
End of manual.
Recommended BIOS settings:
If your board fails to boot after a hardware change or a bad setting alteration, you must reset the motherboard's CMOS memory. Turn off the PC and unplug the AC power cord. Connects to pins 5 and 7
Often uses the ML194V-0 revision for its internal board. FOXCONN ML194V-0 MOTHERBOARD MANUAL