ATX v2.2 Power Supply

From HwB

As specified in ATX Specification, from 2.2.

As specified in ATX12V Specification, from v2.0.

See ATX Power Supply for older 20 pin connector.

Pinout

Atx24f.png

24 PIN MOLEX 44206-0007 at the motherboard

Atx24m.png

24 PIN MOLEX 39-01-2240 at the cable

Pin Name Color Description
1 +3.3V Orange +3.3 VDC
2 +3.3V Orange +3.3 VDC
3 COM Black Ground
4 +5V Red +5 VDC
5 COM Black Ground
6 +5V Red +5 VDC
7 COM Black Ground
8 PWR_OK Gray Power Ok (+5V & +3.3V is ok)
9 +5VSB Purple +5 VDC Standby Voltage (max 10mA)
10 +12V1 Yellow +12 VDC
11 +12V1 Yellow +12 VDC
12 +3.3V Orange +3.3 VDC
13 +3.3V Orange +3.3 VDC
14 -12V Blue -12 VDC
15 COM Black Ground
16 /PS_ON Green Power Supply On (active low)
17 COM Black Ground
18 COM Black Ground
19 COM Black Ground
20 N/C Not connected
21 5V Red +5 VDC
22 5V Red +5 VDC
23 5V Red +5 VDC
24 COM Black Ground

18 AWG is recommended for all wires except pin 11, which should be 22 AWG
For 300W configurations 16 AWG is recommended.

Contributions

Sources