Gigabyte Understanding ATX_12V Power Connectors for Motherboards

1/2) ATX_12V/ATX (2x2 12V Power Connector and 2x12 Main Power Connector)

With the use of the power connector, the power supply can supply enough stable power to all the components on the motherboard. Before connecting the power connector, first make sure the power supply is turned off and all devices are properly installed. The power connector possesses a foolproof design. Connect the power supply cable to the power connector in the correct orientation. The 12V power connector mainly supplies power to the CPU. If the 12V power connector is not connected, the computer will not start.

•To meet expansion requirements, it is recommended that a power supply that can withstand

high power consumption be used (500W or greater). If a power supply is used that does not provide the required power, the result can lead to an unstable or unbootable system.

•The main power connector is compatible with power supplies with 2x10 power connectors. When using a 2x12 power supply, remove the protective cover from the main power connector on the motherboard. Do not insert the power supply cable into pins under the protective cover when using a 2x10 power supply.

1224

113

		ATX_12V:
		Pin No.	Definition
3	4	1	GND
1	2	2	GND
	ATX_12V	3	+12V
		4	+12V

ATX:

Pin No.	Definition	Pin No.	Definition
1	3.3V	13	3.3V
2	3.3V	14	-12V
3	GND	15	GND
4	+5V	16	PS_ON(soft On/Off)
5	GND	17	GND
6	+5V	18	GND
7	GND	19	GND
8	Power Good	20	-5V
9	5V SB(stand by +5V)	21	+5V
10	+12V	22	+5V
11	+12V(Onlyfor2x12-pinATX)	23	+5V (Only for 2x12-pinATX)
12	3.3V(Onlyfor2x12-pinATX)	24	GND (Only for 2x12-pinATX)

ATX

GA-P31-ES3G Motherboard - 22 -