MSI G31M3-F - Motherboard - Micro ATX manual Power Supply, ATX 24-Pin Power Connector ATX1, JPW1

Hardware Setup

Power Supply

ATX 24-Pin Power Connector: ATX1

This connector allows you to connect an ATX 24-pin power supply. To connect the ATX 24-pin power supply, make sure the plug of the power supply is inserted in the proper orientation and the pins are aligned. Then push down the power supply firmly into the connector.

You may use the 20-pin ATX power supply as you like. If you’d like to use the 20-pin ATX power supply, please plug your power sup- ply along with pin 1 & pin 13 (refer to the image at the right hand).

Pin Definition

pin 13

pin 12

12	24
ATX1
1	13

PIN	SIGNAL	PIN	SIGNAL
1	+3.3V	13	+3.3V
2	+3.3V	14	-12V
3	GND	15	GND
4	+5V	16	PS-ON#
5	GND	17	GND
6	+5V	18	GND
7	GND	19	GND
8	PWROK	20	Res
9	5VSB	21	+5V
10	+12V	22	+5V
11	+12V	23	+5V
12	+3.3V	24	GND

ATX 12V Power Connector: JPW1

This 12V power connector is used to provide power to the CPU.

JPW1

4	2
3	1

Pin Definition

PIN	SIGNAL
1	GND
2	GND
3	12V
4	12V

Important

1.Make sure that all the connectors are connected to proper ATX power sup- plies to ensure stable operation of the mainboard.

2.Power supply of 350 watts (and above) is highly recommended for system stability.

3.ATX 12V power connection should be greater than 18A.

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