P4X MAINBOARD SERIES
Page 17
2.5.5. ATX12V Power Supply Connectors
Connector: CN 15-A/ CN15-B/ CN15-C
Type: 20 pin block/2x2 12V/1x6
The mainboards in this series all come with three onboard power supply connec-
tors labled from CN15-A to CN15-C. CN15-A and the CN15-B are regular ATX
power supply connectors that have been used on all recent motherboards. The
CN15-C power connector is for a +3.3V and +5V power supply. These increased
power supplies are necessary to provide extra power for the slot. The ATX 12V
power supplies are all downward compatible with standard ATX power supplies.
2.5.3. Standard Infrared Connector
(Optional )
Connector: CN 12
Type: 5 pin
The SIR connector supports an optional wireless transmitting and receiving mod-
ule. You must configure UART 2 to select whether UART 2 is directed for use with
COM 2 or IrDA.
2.5.4. CPU Fan and Chassis Fan Connector
Connector: CN 13 (CPU Fan 1)/CN 17 (Chassis Fan)
Type: 3 pin
The cooling fans must be connected to their respective power connectors.
Fan Signal
+12V DC
Ground
1 Ground
2 +12V DC
3 Fan Signal
Top View of a Fan Connector
Front View of a Fan Connector
1 5V DC
2 No Connection
3 IR Reciever
4 Ground
5 IR Transmitter
Top View of an IR Connector
5V DC
IR Receiver Ground IR Transmitter
Front View of an IR Connector
Hardware Installation
