CHAPTER 2
HARDWARE INSTALLATION
2-26
2.5 Serial Port Connector: COM A
The mainboard provides a 9-pin male DIN connector for serial port COM A.
This port is a 16550A high speed communication ports that send/receive 16
bytes FIFOs. You can attach a mouse or a modem cable directly into this
connector.
PIN
SIGNAL
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
6
DSR(Data Set Ready)
7
RTS(Request To Send)
8
CTS(Clear To Send)
9
RI(Ring Indicate)
1 2 3 4 5
6 7 8 9
COM A
PIN DEFINITION
