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M S-7551 M ainboard
Power Supply
ATX 24-Pin Power Connector: JPWR2
This connector allows you to connect an ATX 24-pin power supply.
To connect the ATX 24-pin 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 as you like. If you'd like
to use the 20-pin ATX power supply, please plug your power sup-
ply 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
JPWR2
1
ATX 4-Pin Power Connector: JPWR1
This power connector is used to provide power to the CPU.
JPWR1
Important
1. Make sure that all the connectors are connected to proper ATX power sup-
plies to ensure stable operation of the mainboard.
2. Power supply of 400 watts (and above) is highly recommended for system
stability.
En-10
Pin Definition
PIN
SIGNAL
24
1
+3.3V
2
+3.3V
3
GND
4
+5V
5
GND
6
+5V
7
GND
8
PWR OK
9
5VSB
10
+12V
11
+12V
13
12
+3.3V
Pin Definition
3
4
PIN
1
2
1
2
3
4
pin 13
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
SIGNAL
GND
GND
12V
12V
pin 12
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