Thanks Mark for your advice. Historically this printer has been hard wired to an ancient Toshiba laptop with which it has performed admirably if somewhat slowly. Would the modifications you propose interfere with the alternative Toshiba connection? In other words will it be possible to connect either laptop for occasional printing jobs.
Ideally I would like to get a wireless adaptor for the printer so that it can be shared with both laptops but my investigations into adaptors and user comments on their effectiveness has not filled me with a great deal of confidence so far.