Power Supply; Atx 20-Pin Power Connector: Atxpwr; Atx 12V Power Connector: Aux12V - VIA Technologies P4MA PRO User Manual

The VIA P4MA PRO mainboard requires an ATX power supply for powering
the system. Before inserting the power supply connector, always make sure
that all components are installed properly to ensure that no damage will be
caused.

ATX 20-Pin Power Connector: ATXPWR

This connector is for the ATX power supply. To connect to the ATX power
supply, make sure the plugs of the power supply are inserted in the correct
orientation and the pins are properly aligned. Then, push down the plugs
firmly into the connector.
2
AUX12V
1
10
ATXPWR
1
ATX 12V Power Connector: ATX12V
This 12V power connector is used to provide power to the CPU.
ATXPWR Pin Definition
PIN SIGNAL
1 3.3V
2 3.3V
3 GND
4 5V
5 GND
6 5V
7 GND
8 PW_OK
9 5V_SB
10 12V

Power Supply

4
3
20
11
PIN SIGNAL
11 3.3V
12 -12V
13 GND
14 PS_ON
15 GND
16 GND
17 GND
18 -5V
19 5V
20 5V
2-7
Installation
M
ATX12V Pin
PIN SIGNAL
1 GND
2 GND
3 12V
4 12V