2-13
Hardware Setup
Serial Port Connectors: COM A & COM 2
The mainboard offers two serial port connectors COM A and COM 2.
Both COMA and COM 2 are 16550A high speed communication ports that
send/receive 16 bytes FIFOs. You can attach a serial mouse or other serial
device directly to them.
6 7 8 9
COM A
1 2 3 4 5
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
COM 2
1 6
2 7
3 8
4 9
5
