MSI 915GM-FR User Manual - Page 21

Power Supply - 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 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 pin 13 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. pin 12 Pin Definition 13 1 PIN SIGNAL PIN SIGNAL 1 +3.3V 13 +3.3V 2 +3.3V 14 -12V 3 GND 15 GND ATX1 4 +5V 5 GND 16 PS-ON# 17 GND 6 +5V 18 GND 7 GND 19 GND 8 PW R OK 20 Res 9 5VSB 21 +5V 10 +12V 22 +5V 11 +12V 24 12 12 NC 23 +5V 24 GND ATX 12V Power Connector: JPW1 This 12V power connector is used to provide power to the CPU. 2 1 JPW1 4 3 JPW1 Pin Definition PIN SIGNAL 1 GND 2 GND 3 12V 4 12V 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. 2-9

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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.
JPW1
1
3
4
2
PIN
SIGNAL
13
+3.3V
14
-12V
15
GND
16
PS-ON#
17
GND
18
GND
19
GND
20
Res
21
+5V
22
+5V
23
+5V
24
GND
PIN
SIGNAL
1
+3.3V
2
+3.3V
3
GND
4
+5V
5
GND
6
+5V
7
GND
8
PW R OK
9
5VSB
10
+12V
11
+12V
12
NC
Pin Definition
PIN
SIGNAL
1
GND
2
GND
3
12V
4
12V
JPW1 Pin Definition
ATX 12V Power Connector: JPW1
This 12V power connector is used to provide power to the CPU.
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.
ATX1
1
12
24
13
pin 12
pin 13
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.