Asus TW300-E5/PI4 - Manual (Page 62)

Chapter 3: Motherboard information 3-16
7. Optical drive audio connector (4-pin CD)
These connectors allow you to receive stereo audio input from sound sources
such as a CD-ROM, TV tuner, or MPEG card.
8. Serial port connector (10-1 pin COM1)
This connector is for a serial (COM) port. Connect the serial port module
cable to this connector, then install the module to a slot opening at the back
of the system chassis.
P5E WS PRO
®
P5E WS Professional Internal audio connector
CD
Right A
udio Channel
Left A
udio Channel
Ground Ground
P5E WS PRO
®
P5E WS Professional COM port connector
PIN 1
COM1