Chapter 3 Connectors
41
CN Label:
COM3, COM4
CN Type:
10-pin box header, p=2.54 mm
CN Location:
See
Figure 3-22
CN Pinouts:
See
Table 3-21
and
Table 3-22
Each of these connectors provides RS-232/422/485 connections.
NOTE:
The communication protocol of the serial ports is set through the
BIOS menu in “Advanced
→
Super IO Configuration
→
Serial Port 3/4
Configuration”. Use the
Transfer Mode
BIOS option to configure
the correspondent serial ports (refer to
Sections 5.3.4.1.3
and
5.3.4.1.4
for detailed information).
Figure 3-22: RS-232/422/485 Serial Port Connector Locations
Pin
Description
Pin
Description
1
DCD
2
DSR
3
SIN
4
RTS
5
SOUT
6
CTS
7
DTR
8
RI
9
GND
10
GND
Table 3-21: RS-232/422/485 Serial Port Connector Pinouts
The user may use the RS-232/422/485 cable to connect to a serial device.
The pinouts of the DB-9 connector are listed below.