ok i lied, i went to RUSSIA for you (no USFF mentioned nor answered) ultra SFF.with 13/14 front panel jack.
all MOBO not USFF have 5/6 jack for powerjack
Power_SW labled.
http://pinoutguide.com/Motherboard/Dell_Optiplex_360_790_701_pinout.shtml
i see he does not know how to find ground.?
so pin 1 to 2 jump I guess.
pin 5 is missing keyed pin.
im guessing pin 4 is power 5vdc, for led a meter used, yes measure them.
one more way short pin 1 to case see if this turns on PSU.
if that fails short pin 2 to PC case, one of the 2 will work. I think.
there it is, reverse engineered by a great russian hacker,
thanks to MR, COsta.
Ps do not wreck the connector, use 2 arduino pinned jumper wires,
2 wires 2 pins, no damage to mobo , OK>?
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