A300 Motherboard
The serial ports connectors connect to RS-232 serial port device.
Figure 4-15: RS-232 Serial Port Connector Locations
PIN NO. DESCRIPTION
P
IN NO
.
DESCRIPTION
1 DCD4 2 DSR4
3 RX4 4 RTS4
5 TX4 6 CTS4
7 DTR4 8 RI4
9 5V 10 GND
Table 4-15: COM4 Serial Port Connector Pinouts
PIN NO. DESCRIPTION
P
IN NO
.
DESCRIPTION
1 DCD5 2 DSR5
3 RX5 4 RTS5
5 TX5 6 CTS5
7 DTR5 8 RI5
9 GND 10 GND
Table 4-16: COM5 Serial Port Connector Pinouts