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
24 PIN MOLEX 44206-0007 at the motherboard
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.