• Welcome to Overclockers Forums! Join us to reply in threads, receive reduced ads, and to customize your site experience!

ATX Power Connector Pinout

Overclockers is supported by our readers. When you click a link to make a purchase, we may earn a commission. Learn More.


Feb 2, 2002
Well all you PSU freaks (j/k) read these :

Pin1 > +3.3Vdc
Pin2 > +3.3Vdc
Pin3 > Ground
Pin4 > +5Vdc
Pin5 > Ground
Pin6 > +5Vdc
Pin7 > Ground
Pin8 > Power good
Pin9 > +5Vdc (Standby)
Pin10 > +12Vdc
Pin11 > +3.3Vdc
Pin12 > -12Vdc
Pin13 > Ground
Pin14 > PS-ON ("Soft" power control singal)
Pin15 > Ground
Pin16 > Ground
Pin17 > Ground
Pin18 > -5Vdc
Pin19 > +5dc
Pin20 > +5dc

Maybe this should be a sticky for those that are interested in these data ( MO ) :) :D :p