ATX Power Supply
As specified in ATX Specification, upto v2.1.
As specified in ATX12V Specification, upto v1.3.

Pinout

20 PIN MOLEX 39-29-9202 at the motherboard

20 PIN MOLEX 39-01-2200 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 12V Yellow +12 VDC
11 3.3V Orange +3.3 VDC
12 -12V Blue -12 VDC
13 COM Black Ground
14 /PS_ON Green Power Supply On (active low)
15 COM Black Ground
16 COM Black Ground
17 COM Black Ground
18 -5V White -5 VDC
19 5V Red +5 VDC
20 5V 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 v2.2 Power Supply
As specified in ATX Specification, from 2.2.
As specified in ATX12V Specification, from v2.0.
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.

ที่มาของข้อมูล
http://www.hardwarebook.info/ATX_Power_Supply
http://www.hardwarebook.info/ATX_v2.2_Power_Supply






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