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M S-7100 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: JPWR1
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.
13
JPWR1
24
ATX 12V Power Connector: JPWR2
This 12V power connector is used to provide power to the CPU.
4
3
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 450 watts (and above) is highly recommended for
system stability.
3. For ATX 12V power connection, it should be greater than 18A.
4. For this model, you must use the power supply that with a -5V pin
supply.
2-10
Power Supply
1
PIN
1
2
3
4
5
6
7
8
9
10
11
12
12
2
1
JPWR2
Pin Definition
SIGNAL
PIN
+3.3V
13
+3.3V
14
GND
15
+5V
16
GND
17
+5V
18
GND
19
PWR OK
20
5VSB
21
+12V
22
+12V
23
24
NC
JPW1 Pin Definition
PIN
SIGNAL
1
GND
2
GND
3
12V
4
12V
SIGNAL
+3.3V
-12V
GND
PS-ON#
GND
GND
GND
-5V
+5V
+5V
+5V
GND
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