MSI P45D3 User Guide - Page 23

Power Supply

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Hardware Setup Power Supply ATX 24-Pin Power Connector: ATX1 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 supply along with pin 1 & pin 13 (refer to the image at the right hand). Pin Definition 1 13 PIN SIGNAL PIN SIGNAL ATX1 12 1 +3.3V 13 +3.3V 2 +3.3V 14 -12V 3 GND 15 GND 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 24 11 +12V 22 +5V 23 +5V 12 +3.3V 24 GND pin 13 pin 12 ATX 12V Power Connector: POWER1 / JPWR1 The POW ER1 12V power connector is used to provide power to the CPU. And the JPW R1 12V power connector is used to provide power to the PCIEX16 graphics card. Pin Definition Pin Definition 1 5 PIN SIGNAL PIN SIGNAL PIN SIGNAL 4 8 POWER1 1 GND 2 GND 3 GND 4 GND 5 +12V 6 +12V 7 +12V 8 +12V 1 1 2 JPWR1 3 4 5V GND GND 12V Important 1. Make sure that all the connectors are connected to proper ATX power supplies to ensure stable operation of the mainboard. 2. Power supply of 350 watts (and above) is highly recommended for system stability. 3. ATX 12V power connection should be greater than 18A. 2-9

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2-9
Hardware Setup
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
pin 12
pin 13
ATX1
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 350 watts (and above) is highly recommended for system
stability.
3. ATX 12V power connection should be greater than 18A.
ATX 24-Pin Power Connector: ATX1
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).
POWER1
PIN
SIGNAL
1
5V
2
GND
3
GND
4
12V
Pin Definition
1
JPWR1
PIN SIGNAL
5
+12V
6
+12V
7
+12V
8
+12V
PIN SIGNAL
1
GND
2
GND
3
GND
4
GND
Pin Definition
ATX 12V Power Connector: POWER1 / JPWR1
The POWER1 12V power connector is used to provide power to the CPU. And the
JPWR1 12V power connector is used to provide power to the PCIEX16 graphics
card.
1
12
24
13
1
4
8
5