MSI P1 User Guide - Page 22

Power Supply

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MS-9258 Server Power Supply 24-Pin System Power Connector: JPWR2 This connector allows you to connect a 24-pin power supply. To connect the 24-pin power supply, make sure the power supply connector is inserted in the proper orientation and the pins are aligned. Then push down the power supply firmly into the connector. pin 12 You may use the 20-pin power supply as well. If you'd like to use the 20-pin power supply, please align your power supply connector with pin 1 & pin 13. There is also a foolproof design on pin 11, 12, 23 & 24 to avoid wrong installation. pin 13 Pin Definition JPWR2 PIN SIGNAL 1 +3.3V PIN SIGNAL 13 +3.3V 24 13 2 +3.3V 14 -12V 3 GND 15 GND 12 1 4 +5V 16 PS-ON# 5 GND 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 23 +5V 12 +3.3V 24 GND 8-Pin CPU Power Connector: JPWR1 This connector provides 12V power output to the CPU. JPWR1 1 4 5 8 Pin Definition PIN SIGNAL 1 GND 2 GND 3 GND 4 GND PIN SIGNAL 5 +12V 6 +12V 7 +12V 8 +12V Important 1. Make sure that all connectors are connected to proper power supplies to ensure stable operation of the mainboard. 2. Power supply of 350 watts (and above) is highly recommended for system stability. 2-6

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2-6
MS-9258 Server
pin 12
pin 13
Important
1. Make sure that all connectors are connected to proper power supplies to
ensure stable operation of the mainboard.
2. Power supply of 350 watts (and above) is highly recommended for system
stability.
24-Pin System Power Connector: JPWR2
This connector allows you to connect a 24-pin power supply. To
connect the 24-pin power supply, make sure the power supply
connector 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 power supply as well. If you
’
d like to use the
20-pin power supply, please align your power supply connector
with pin 1 & pin 13. There is also a foolproof design on pin 11, 12, 23
& 24 to avoid wrong installation.
8-Pin CPU Power Connector: JPWR1
This connector provides 12V power output to the CPU.
Power Supply
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
+3.3V
Pin Definition
JPWR2
1
12
24
13
JPWR1
1
8
5
4
PIN
SIGNAL
5
+12V
6
+12V
7
+12V
8
+12V
PIN
SIGNAL
1
GND
2
GND
3
GND
4
GND
Pin Definition