DELL ATX motherboard Power Supply pinout signals @ PinoutGuide.com

This non-standard ATX wiring is used in Dell Pentium II and Pentium III systems.

wire side view:

Color	Signal	Pin	Pin	Signal	Color
Gray	/PS_On	11	1	+5V		Red
Black	GND	12	2	GND		Black
Black	GND	13	3	+5V		Red
Black	GND	14	4	GND		Black
White	-5V	15	5	Power_Good		Orange
Red	+5V	16	6	+5VSB (standby)		Purple
Red	+5V	17	7	+12V		Yellow
Red	+5V	18	8	-12V		Blue
KEY (blank)	-	19	9	GND		Black
Red	+5V	20	10	GND		Black

Pin 19 (blank) on the 20 pin connector type may have a brown wire installed there (at least on PS-5231-1 power source).

According to 59 reports in our database (55 positive and 2 negative) the DELL ATX motherboard Power Supply pinout should be correct.

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Source(s) of this and additional information: DELL ATX design, http://pinouts.ru/Power/atxpower_pinout.shtml

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power cable and connector

DELL ATX motherboard Power Supply pins and signals