SFX Motherboard Power 20 Pin

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ATX ver. 1.x 20 pin MOLEX 39-29-9202 connector at the motherboard 20 pin MOLEX 39-29-9202 connector at the motherboard.

Color Pin Name Description Color Pin Name Description
orange 1 +3.3 VDC Power +3.3V orange 11 +3.3 VDC Power +3.3V
orange 2 +3.3 VDC Power +3.3V blue 12 -12 VDC Power -12V
black 3 GND Ground black 13 GND Ground
red 4 +5 VDC Power +5V green 14 PS-ON Remote Power ON/OFF
black 5 GND Ground black 15 GND Ground
red 6 +5 VDC Power +5V black 16 GND Ground
black 7 GND Ground black 17 GND Ground
grey 8 PWROK Power Good 18 Reserved
purple 9 +5 VSB +5V Standby red 19 +5 VDC Power +5V
yellow 10 +12 VDC Power +12V red 20 +5 VDC Power +5V


  • Same as ATX except that -5VDC is removed from pin 18
  • SFX power connector on the motherboard consists of two rows of 10 pins.
  • This connector from the SFX power supply can only be fitted in one way.
  • /PSON activated by pressing and releasing the power button while the power supply is in standby mode.
  • Activating /PSON connects the power supply’s /PSON input to ground, thereby switching the power supply to full-on condition.
  • 18 AWG is recommended for all wires except pin 11, which should be 22 AWG.
  • For 300W configurations 16 AWG is recommended.


  • Generic Mainboard Manual

Category:Power Supply Connectors


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