MSI H55M-E21 Power Supply, ATX 24-pin Power Connector JPWR1, ATX 4-pin Power Connector JPWR2

Hardware Setup

Power Supply

ATX 24-pin Power Connector: JPWR1

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 supply along with pin 1 & pin 13.

													12		.
												11
																+3.
											10 .
										9 .				+12V				3
								8			.
																			V
						7 .
					6		.					+12V
										PW5VSB
				5 .								R
			4 . +5						V				O
		3		.										K
2								Ground
			. +5			V
1	.
					Ground
. +3				.
+3																										24
				3
		.GroundV
		3																							23 .
				V																					22 .
																								21 . +5
																							20		.	+5			GroundV
																							19	. +5			V	V
																							.		Res
																					17		18.
																							.	Ground
																				16		.
																		15
																14..							PSGround-Ground
														13					-
																	.			12V			ON
																	+3							#
																				.Ground
																				3
																					V

ATX 4-pin Power Connector: JPWR2

This connector is used to provide the power output to the CPU.

	1
2	.
.
	Ground
Ground
		3
		.
	4	+12V
	.
	+12V

Important

•Make sure that all the connectors are connected to proper ATX power supplies to

ensure stable operation of the mainboard.

2-10