ATX GES 24 pin power supply connector pinout and wiring @ pinoutsguide.com

Although most recent x86 server motherboards are designed to use either ATX12V v2.x or EPS12V power supplies, some servers use the ATX GES power supply standard developed by AMD to support its first server-class processor, the Athlon MP, when used in dual-processor (two-way) configurations.

The ATX GES power supply standard was used by the Tyan Thunder K7 (S2452 series) and Tyan Thunder K7X (S2468 series) motherboards made for the AMD Athlon MP processor. Note that the Tyan Thunder K7X Pro uses an EPS12V power supply.

Pin	Name	Color	Description
1	5V	Red	+5 VDC
2	5V	Red	+5 VDC
3	COM	Black	Ground
4	COM	Black	Ground
5	/PS_ON	Green	Power Supply On (active low). Short this pin to GND to switch power supply ON, disconnect from GND to switch OFF.
6	COM	Black	Ground
7	3.3V	Orange	+3.3 VDC
8	3.3V	Orange	+3.3 VDC
9	COM	Black	Ground
10	COM	Black	Ground
11	12V	Yellow	+12 VDC
12	12V	Yellow	+12 VDC
13	+5V	Red	+5 VDC
14	+5V	Red	+5 VDC
15	COM	Black	Ground
16	5VSB	Purple	+5 VDC Standby Voltage (max 10mA)
17	-12V	Blue	-12 VDC
18	COM	Black	Ground
19	3.3V	Orange	+3.3 VDC
20	3.3V	Orange	+3.3 VDC
21	3.3V	Orange	+3.3 VDC
22	COM	Black	Ground
23	COM	Black	Ground
24	12V	Yellow	+12 VDC

/PSON activated by pressing and releasing the power button while the power supply is in standby mode. Activating /PSON connects the power supply's /PSON input to ground, thereby switching the power supply to full-on condition.

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connector or cable wiring scheme

ATX GES 24 pin power supply connector pinout