MSI K8MM3 Series

2-9
Hardware Setup
View of the Back Panel
The back panel provides the following connectors:
Back Panel
Mouse
Parallel
USB Ports
COM 1
USB Ports
Keyboard
L-out
LAN
(optional)
1394
Port
L-in
MIC
VGA Port
Serial Port: COM1
The mainboard provides one 9-pin mail DIN connector as serial port COM1. The serial
port is a 16550A high speed communication port that sends/receives 16 bytes FIFOs.
You can attach a serial mouse or other serial device directly to it.
COM1
1 2 3 4 5
6 7 8 9
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