MSI MS-6189 Manual page 18

CHAPTER 2 CHAPTER 2 CHAPTER 2 CHAPTER 2 CHAPTER 2
2.9 Serial Port Connectors: COM A and COM B 2.9 Serial Port Connectors: COM A and COM B
2.9 Serial Port Connectors: COM A and COM B 2.9 Serial Port Connectors: COM A and COM B 2.9 Serial Port Connectors: COM A and COM B
The mainboard provides two 9-pin male DIN connector for serial port COM
A & COM B. These ports are 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 DEFINITION
PIN
1
2
3
4
5
6
7
8
9
Note:
9
RI 8 7
5
CTS 6
4 3
RTS
1
2
DSR
COM B
1 2 3 4 5
6 7 8 9
COM A
Serial Port (9-pin Male)
SIGNAL
DCD(Data Carry Detect)
SIN(Serial In or Receive Data)
SOUT(Serial Out or Transmit Data)
DTR(Data Terminal Ready)
GND
DSR(Data Set Ready)
RTS(Request To Send)
CTS(Clear To Send)
RI(Ring Indicate)
There's another serial port connector (COM B),
GND
which is located on the mainboard. Connect a
DTR
SOUT
serial port 9 pin male port into this connector.
SIN
DCD
HARDW W W W W ARE INST HARD HARD HARD HARD
2-14
ARE INSTALLA ARE INST ARE INST ARE INST ALLATION ALLA ALLA ALLA TION TION TION TION