MSI K9A2VM-FD User Guide - Page 22

Power Supply - mainboard

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Page 22 highlights

MS-7501 Mainboard Power Supply ATX 24-Pin Power Connector: ATXPWR1 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). There is also a foolproof design on pin 11, 12, 23 & 24 to avoid wrong installation. ATXPWR1 12 24 1 13 Pin Definition PIN SIGNAL PIN SIGNAL 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 22 +5V 11 +12V 23 +5V 12 +3.3V 24 GND pin 13 pin 12 ATX 12V Power Connector: PWR1 This power connector is used to provide power to the CPU. PWR1 3 4 1 2 Pin Definition PIN SIGNAL 1 GND 2 GND 3 12V 4 12V Important 1. Make sure that all the 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. 2-8

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2-8
MS-7501 Mainboard
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
Power Supply
pin 12
pin 13
ATX 24-Pin Power Connector: ATXPWR1
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.
PIN
SIGNAL
1
GND
2
GND
3
12V
4
12V
Pin Definition
ATX 12V Power Connector: PWR1
This power connector is used to provide power to the CPU.
Important
1. Make sure that all the 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.
ATXPWR1
24
13
1
12
PWR1
1
3
4
2