User's Manual

COM3 & COM4 Power Setting

COM3 and COM4 can be set to provide power to your serial device.

The voltage can be set to +5V or 12V by setting jumper JP18 on the

motherboard.

When enabled, the power is available on pin 10 of the RJ45 serial connector.

If you use the serial RJ45 to DB9 adapter cable, the power is on pin 9 of the DB9

connector.

By default, the power option is disabled in the BIOS.

Enable COM3/COM4 power in BIOS

1. Power on the system, and

press the <DEL> key when the

system is booting up to enter

the BIOS Setup utility.

2. Select the Advanced tab

3. Select Power Configuration

COM/VGA Ports and press

<Enter> to go to display the

available options.

4. To enable the power, select

COM3 Power Setting or

COM4 Power setting and

press <Enter>. Select Power

and press <Enter>.

Save the change by pressing

F10.