MSI MS-6340 - Serial Port Connectors: COM a & COM B

Hardware Setup
2-9
Serial Port Connectors: COM A & COM B
The mainboard provides two 9-pin male DIN connectors for serial port COM
A & COM B. The ports are 16550A high speed communication ports that
send/receive 16 bytes FIFOs. You can attach a mouse or a modem cable
directly into the connectors.
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)
PIN DEFINITION
Serial Ports (9-pin Male)
COM A
COM B
1 2 3 4 5
6 7 8 9
1 2 3 4 5
6 7 8 9