MSI KM4M User Guide - Page 19

Power Supply

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Hardware Setup Power Supply 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 20-Pin Power Connector: CONN1 This connector allows you to connect to an ATX power supply. To connect to the ATX 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. ATX 12V Power Connector: JPW1 This 12V power connector is used to provide power to the CPU. 11 1 20 10 CONN1 CONN1 Pin Definition PIN SIGNAL PIN 1 3.3V 11 2 3.3V 12 3 GND 13 4 5V 14 5 GND 15 6 5V 16 7 GND 17 8 PW_OK 18 9 5V_SB 19 10 12V 20 SIGNAL 3.3V -12V GND PS_ON GND GND GND -5V 5V 5V 2 1 4 3 JPW1 JPW1 Pin Definition PIN SIGNAL 1 GND 2 GND 3 12V 4 12V 2-9

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2-9
Hardware Setup
Power Supply
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 20-Pin Power Connector: CONN1
This connector allows you to connect to an ATX power supply.
To connect to the ATX
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.
PIN
SIGNAL
11
3.3V
12
-12V
13
GND
14
PS_ON
15
GND
16
GND
17
GND
18
-5V
19
5V
20
5V
PIN
SIGNAL
1
3.3V
2
3.3V
3
GND
4
5V
5
GND
6
5V
7
GND
8
PW_OK
9
5V_SB
10
12V
CONN1 Pin Definition
CONN1
10
1
20
11
JPW1
1
3
4
2
ATX 12V Power Connector: JPW1
This 12V power connector is used to provide power to the CPU.
PIN
SIGNAL
1
GND
2
GND
3
12V
4
12V
JPW1 Pin Definition