Intel ATX12V manual ATX Main Power Connector, Pin Signal Color

ATX12V Power Supply Design Guide

Version 2.0

4.5.1. ATX Main Power Connector

Connector: MOLEX* housing: 24 Pin Molex Mini-Fit Jr. PN# 39-01-2240 or equivalent

(Mating motherboard connector is Molex 44206-0007 or equivalent)

18 AWG is suggested for all wires except for the +3.3 V sense return wire, pin 11 (22 AWG). For 300 W configurations, 16 AWG is recommended for all +12 VDC, +5 VDC, +3.3 VDC, and COM.

Pin	Signal	Color
1	+3.3VDC	Orange
2	+3.3VDC	Orange
3	COM	Black
4	+5VDC	Red
5	COM	Black
6	+5VDC	Red
7	COM	Black
8	PWR_OK	Gray
9	+5VSB	Purple
10	+12 V1DC	Yellow
11	+12 V1DC	Yellow
12	+3.3 VDC	Orange

Pin	Signal	Color
13	+3.3VDC	Orange
[13]	[+3.3 V default	[Brown]
	sense]
14	-12VDC	Blue
15	COM	Black
16	PS_ON#	Green
17	COM	Black
18	COM	Black
19	COM	Black
20	Reserved	N/C
21	+5VDC	Red
22	+5VDC	Red
23	+5 VDC	Red
24	COM	Black

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