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7 serial port connectors (com 2 and com3), Figure 4-25: serial port pinout locations, Table 4-26: rs-232 serial port (com 1) pinouts – Intel iEi Motherboard A300 User Manual

Page 72: A300 motherboard, Page 57

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A300 Motherboard

5 TX1

6 CTS1

7 DTR1

8 RI1

9 GND

10

GND

Table 4-26: RS-232 Serial Port (COM 1) Pinouts

Figure 4-25: Serial Port Pinout Locations

4.3.7 Serial Port Connectors (COM 2 and COM3)

CN Label:

J5

CN Type:

DB-9 connector

CN Location:

See Figure 4-20

CN Pinouts:

See Table 4-27 and Figure 4-25

The 9-pin DB-9 COM 2 and COM3 serial port connectors are connected to RS-232 serial

communications devices.

PIN NO. DESCRIPTION PIN NO. DESCRIPTION

1 DCD3

2 DSR3

3 RX3

4 RTS3

5 TX3

6 CTS3

7 DTR3

8 RI3

9 GND

10

GND

Table 4-27: RS-232 Serial Port (COM2, COM3) Pinouts

Page 57

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