Manual

WAFER-945GSE 3.5" Motherboard
Page 30
3.2.15 Serial Port Connectors, RS-232
CN Label: COM3, COM4, COM5, COM6
CN Type:
40-pin header
CN Location:
See Figure 3-16
CN Pinouts:
See Table 3-17
The 40-pin serial port connector contains the following four serial ports: COM3, COM4,
COM5 and COM6. All these serial ports are RS-232 serial communications channels. The
serial port locations are specified below.
 COM3 is located on pin 1 to pin 10
 COM4 is located on pin 11 to pin 20
 COM5 is located on pin 21 to pin 30
 COM6 is located on pin 31 to pin 40
Figure 3-16: COM3 to COM6 Connector Pinout Locations
Pin Description Pin Description
1 DATA CARRIER DETECT (DCD3) 2 DATA SET READY (DSR3)
3 RECEIVE DATA (RXD3) 4 REQUEST TO SEND (RTS3)
5 TRANSMIT DATA (TXD3) 6 CLEAR TO SEND (CTS3)
7 DATA TERMINAL READY (DTR3) 8 RING INDICATOR (RI3)
9 GND 10 GND
11 DATA CARRIER DETECT (DCD4) 12 DATA SET READY (DSR4)