RM ONE - Mouse Connector; Serial Connector

5: Technical Information
Mouse Connector
Depending on the model, your RM One computer may have a PS/2
style mouse connector. If a PS/2 style mouse connector is not
present then one of the serial connectors can be used. See overleaf
for the pin out of a serial connector.
Serial Connector
At the back of your RM One computer there is a serial connector:
RS232C asynchronous, 9-way male D-type connectors. The 9-pin
plug wiring is the same as an IBM serial adapter for the IBM PC-AT,
giving an RS232-like interface.
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