MSI IM-945GC User Manual page 27

Serial Port Connector: COM1, COM2, COM3
This connector is a 16550A high speed communications port that sends/receives 16
bytes FIFOs. You can attach a serial device to it through the optional serial port
bracket.
COM1
9 1
10 2
COM2
2 10
1 9
Fan Power Connector: CPUFAN1, SYSFAN1
The fan power connectors support system cooling fan with +12V. W hen connecting
the wire to the connectors, always note that the red wire is the positive and should
be connected to the +12V; the black wire is Ground and should be connected to GND.
If the mainboard has a System Hardware Monitor chipset onboard, you must use a
specially designed fan with speed sensor to take advantage of the CPU fan control.
Important
Please refer to the recommended CPU fans at CPU vendor's official website
or consult the mainboard vendor for proper CPU cooling fan.
PIN
COM3
1
2
1 2
3
4
5
9 10
6
7
8
9
CPUFAN1
Hardware Setup
Pin Definition
SIGNAL DESCRIPTION
DCD Data Carry Detect
SIN Serial In or Receive Data
SOUT Serial Out or Transmit Data
DTR Data Terminal Ready
GND Ground
DSR Data Set Ready
RTS Request T o Send
CTS Clear To Send
VCC_COM Power Source
GND
+1 2V
FAN_RPM
SYSFAN1
2-9