Chapter 2
2-10
Serial Port Connector: COM A & COM B
The mainboard offers two 9-pin male DIN connectors for serial port COM
A and COM B. The ports are 16550A high speed communication ports that
send/receive 16 bytes FIFOs. You can attach a serial mouse or other serial
devices directly to them.
9-Pin Male DIN Connectors
Joystick/Midi Connectors
You can connect a joystick or game pad to this connector.
Audio Port Connectors
Line Out
is a connector for Speakers or Headphones.
Line In
is used for
external CD player, Tape player, or other audio devices.
Mic
is a connector for
microphones.
1/8” Stereo Audio Connectors
1 2 3 4 5
6 7 8 9
Line Out Line In
MIC
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
Pin Definition
