User`s manual

Chapter 2
2-10
Serial Port Connectors: COM A & COM B
The mainboard offers two 9-pin male Serial Port connectors (COM A and COM
B) . You can attach a serial mouse or other serial devices directly to these ports.
1 2 3 4 5
6 7 8 9
PIN SIGNAL DESCRIPTION
1 DCD Data Carry Detect
2 SIN Serial In or Receive Data
3 SOUT Serial Out or Transmit Data
4 DTR Data Terminal Ready)
5 GND Ground
6 DSR Data Set Ready
7 RTS Request To Send
8 CTS Clear To Send
9 RI Ring Indicate
9-Pin Male DIN Connectors
Pin Definition
Joystick (MIDI) Connector
You can connect a joystick or game pad
to this connector.
Audio Port Connectors
Line-Out is a connector for speakers or
headphones. The Line-In connector
can be used for an external CD player,
tape player, or other audio devices. The
Mic-in connector is for connecting
microphones.
1/8” Stereo Audio Connectors
Line Out
Line In MIC
Note: Details on the application of onboard 6-channel audio (VIA P4XB-
RA only) can be acquired by installing the CMI8738 Audio Driver on the
CD-ROM (enclosed in the product package).