User`s manual

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Installation

2-7

Power Supply

ATX 20-Pin Power Connector: JWR1

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 power

supply firmly into

the connector. The

power connector

supports an instant

power on function,

which means that

system will boot up

immediately when

the power supply

connector is in-

serted on the mainboard.

The VIA P4XB-RA and VIA P4XB-SA mainboards require 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 12V Power Connector: JPW1

This 12V power connector is used to provide power to the CPU.

PIN SIGNAL

1 GND

2 GND

3 12V

4 12V

JPW1 Pin Definition

PIN SIGNAL

11 3.3V

12 -12V

13 GND

14 PS_ON

15 GND

16 GND

17 GND

18 -5V

19 5V

20 5V

PIN SIGNAL

1 3.3V

2 3.3V

3 GND

45V

5 GND

65V

7 GND

8 PW_OK

9 5V_SB

10 12V

JWR1 Pin Definition

JPW1

JWR1