Power Supply; Atx 24-Pin Power Connector: Atx1; Atx 12V Power Connector: Jpw1 - MSI K8NNeo4 Platinum Series User Manual

M S-7125 ATX M ainboard
The mainboard supports ATX power supply for the power system. Before inserting
the power supply connector, always make sure that all components are installed
properly to ensure that no damage will be caused.

ATX 24-Pin Power Connector: ATX1

This connector allows you to connect an SSI power supply. To connect the
SSI 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 or 24-pin SSI
power supply as you like. If you'd like to use the ATX power supply,
please plug your power supply along with pin 1 & pin 13 (refer to
the image at the right hand). There is also a foolproof design on pin
11, 12, 23 & 24 to avoid wrong installation.
12
ATX1
1

ATX 12V Power Connector: JPW1

This 12V power connector is used to provide power to the CPU.
3
1
MSI Reminds You...
1. These two connectors connect to the ATX power supply and have to
work together to ensure stable operation of the mainboard.
2. Power supply of 350 watts (and above) is highly recommended for
system stability.
3. For ATX 12V power connection, it should be greater than 18A.
2-10

Power Supply

24 PIN
1
2
3
4
5
6
7
8
9
10
11
13
12
4
2
JPW1
Pin Definition
SIGNAL PIN SIGNAL
+3.3V 13 +3.3V
+3.3V 14 -12V
GND 15 GND
+5V 16 PS-ON#
GND 17 GND
+5V 18 GND
GND 19 GND
PWR OK 20 Res
5VSB 21 +5V
+12V 22 +5V
+12V 23 +5V
24 GND
NC
JPW1 Pin Definition
PIN SIGNAL
1 GND
2 GND
3 12V
4 12V
pin 13
pin 12