MSI LPX ZX4 User Manual page 23

The mainboard has a 9-pin male DIN connector for serial port COM B. The
port is 16550A high speed communication port that send/receive 16 bytes
FIFOs. You can attach a mouse or a modem cable directly into this connec-
tor.
PIN DEFINITION
PIN
1
2
3
4
5
6
7
8
9
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)
2-18
1
COM B