ATX v2.2 Power Supply

Revision as of 16:46, 27 January 2007 by Joakim (Talk | contribs)

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.