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23
Chapter 2 Hardware Installation
Chapter 2
COM (Serial) Ports
Audio
Rear Audio
The system board is equipped with 3 audio jacks. A jack is a one-hole connecting interface for
inserting a plug.
• Line-in Jack (Light Blue)
This jack is used to connect any audio devices such as Hi-fi set, CD player, tape player,
AM/FM radio tuner, synthesizer, etc.
• Line-out Jack (Lime)
This jack is used to connect a headphone or external speakers.
• Mic-in Jack (Pink)
This jack is used to connect an external microphone.
Front Audio
The front audio connector allows you to connect to the second line-out and mic-in jacks that
are at the front panel of your system.
Driver Installation
Install the audio driver. Refer to the chapter 4 for more information.
Front audio
1
Mic2-L
Line2-R
Front_IO_Sense
GND
Presence Signal
Key
2
10
Mic2-JD
Line2-JD
9
Mic2-R
Line2-L
COM 1 and COM 2 are fixed at RS232.
The serial ports are asynchronous communication ports with 16C550A-compatible UARTs that
can be used with modems, serial printers, remote display terminals, and other serial devices.
Connecting External Serial Ports
Your COM port may come mounted on a card-edge bracket. Install the card-edge bracket to
an available slot at the rear of the system chassis then insert the serial port cable to the COM
connector. Make sure the colored stripe on the ribbon cable is aligned with pin 1 of the COM
connector.
BIOS Setting
Configure the serial COM ports in the Advanced menu (“Super IO Configuration” submenu) of
the BIOS. Refer to the chapter 3 for more information.
COM 1/COM 2:
RS232
COM 1
COM 2
DCD-
TD
RD
DT
R-
GND
RT
S-
RI
-
DSR
-
CTS-
1 2 3 4 5
6 7 8 9
Line-out
Line-in
Mic-in
Rear audio
