IBM PC 300GL User Manual download pdf (Page 52)

Appendix A. Connector pin assignments 45

Mouse and keyboard port connectors

Serial port connector

Table 28. Mouse port connector pin assignments

Pin Signal I/O Pin Signal I/O

1DataI/O4+5 V dcN/A

2 Reserved I/O 5 Clock I/O

3 Ground N/A 6 Reserved N/A

Table 29. Keyboard port connector pin assignments

Pin Signal I/O Pin Signal I/O

1 Keyboard data I/O 4 +5 V dc N/A

2 Mouse data I/O 5 Keyboard

Clock

I/O

3GroundN/A6Mouse clockN/A

Table 30. Serial port connector pin assignments

Pin Signal I/O Pin Signal I/O

1 Data carrier detect I 5 Ground N/A

2 Receive data# I 6 Data set ready I

3 Transmit data# O 7 Request to send O

4 Data terminal read O 8 Clear to send I

9 Ring indicator

6

4

2

1

3

5

1

5

69

1 2 ... 47 48 49 50 51 52 53 54 55 56 57 ... 68 69

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