ATX motherboard Power Supply connector

#Computer#Power supply connectors
20 pin MOLEX 39-29-9202 connector pin-out & layout

20 pin MOLEX 39-29-9202 connector  at the motherboard

PinName ColorDescription
13.3V Orange+3.3 VDC
23.3V Orange+3.3 VDC
3COM BlackGround
45V Red+5 VDC
5COM BlackGround
65V Red+5 VDC
7COM BlackGround
8PWR_OK GrayPower Ok (+5V & +3.3V is ok)
95VSB Purple+5 VDC Standby Voltage (max 10mA)
1012V Yellow+12 VDC
113.3V Orange+3.3 VDC
12-12V Blue-12 VDC
13COM BlackGround
14/PS_ON GreenPower Supply On (active low)
15COM BlackGround
16COM BlackGround
17COM BlackGround
18-5V White-5 VDC
195V Red+5 VDC
205V Red+5 VDC
18 AWG is recommended for all wires except pin 11, which should be 22 AWG. For 300W configurations 16 AWG is recommended

ATX / NLX Optional Power connector

AUI connector