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.
[edit] 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.