# ATX +12V Power Supply

(at the motherboard)
(at the cable)

4 PIN MOLEX 39-29-9042 at the motherboard
4 PIN MOLEX 39-01-2040 at the cable

Pin | Name |  | Color | Description
--- | --- | --- | --- | ---
1 | COM |  | Black | Ground
2 | COM |  | Black | Ground
3 | +12VDC |  | Yellow | +12 VDC
4 | +12VDC |  | Orange | +3.3 VDC

Recommended wiresize 20 AWG

Contributor: Joakim Ögren

Source:
ATX Spec v2.03 at Platform Development Support
ATX/ATX12V Power Supply Design Guide at Platform Development Support

Copyright © The Hardware Book Team 1996-2001.
May be copied and redistributed, partially or in whole, as appropriate.
Document last modified: 2001-07-06