MSI 661FM2-LSR User Guide - Page 21

Power Supply, ATX 20-Pin Power Connector: CONN1, ATX 12V Power Connector: JPW1, CONN1 - cpu support

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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. 10 20 1 11 CONN1 CONN1 Pin Definition PIN SIGNAL 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 11 3.3V 12 -12V 13 GND 14 PS_ON 15 GND 16 GND 17 GND 18 -5V 19 5V 20 5V ATX 12V Power Connector: JPW1 This 12V power connector is used to provide power to the CPU. 3 4 1 2 JPW1 JPW1 Pin Definition PIN SIGNAL 1 GND 2 GND 3 12V 4 12V MSI Reminds You... Power supply of 300-watt (and above) is highly recommended for system stability. 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.
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
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
JPW1
10
1
20
11
MSI Reminds You...
Power supply of 300-watt (and above) is highly recommended for
system stability.
1
3
2
4