2-8
MS-9161 SSI Server Board
Power Supply
The mainboard supports SSI 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.
SSI 24-Pin Power Connector: JPWR1
This connector allows you to connect to an SSI power supply. To connect to
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.
SSI 8-Pin Power Connector: JPWR2
This connector provides 12V power output to the CPU.
SSI 5-Pin Power Connector: J2
This connector provides power supply to the System Management Bus (SMB).
PIN
SIGNAL
13
+3.3V
14
-12V
15
GND
16
PS-ON#
17
GND
18
GND
19
GND
20
3VSB
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
PWR OK
9
5VSB
10
+12V
11
+12V
12
+3.3V
JPWR1 Pin Definition
PIN
SIGNAL
5
+12V
6
+12V
7
+12V
8
+12V
PIN
SIGNAL
1
GND
2
GND
3
GND
4
GND
JPWR2 Pin Definition
MSI Reminds You...
Power supply of 425watt (and up) is highly recommended for system
stability.
J2
1
PIN
SIGNAL
1
SMB clock
2
SMB data
3
PS alert
4
GND
5
3.3RS
J2 Pin Definition
JPWR1
12
1
24
13
JPWR2
1
8
5
4
