MSI K9AU Speedster-A4 - Manual (Page 19)

2-7
Hardware Setup
Power Supply
24
1
ATX1
12
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
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 NC
Pin Definition
pin 12
pin 13
System 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).
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
Important
1. Make sure that both connectors are connected to the power supply to ensure
stable operation of the mainboard.
2. Power supply of 350 watts (and above) is highly recommended for system
stability.
CPU Power Connector: JPW1
This 12V power connector is used to provide power to the CPU.
JPW1
1 3
4
2
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