Both Serial and Null Modem have the same 9 pin female connectors and look the same but the difference is the Null Modem is reverse wired inside the cable apparently.
To connect to my PC I ended up needing a USB to Serial converter (Maplin) and that gave me the Serial outlet to plug the Null Modem into.
To connect to my PC I ended up needing a USB to Serial converter (Maplin) and that gave me the Serial outlet to plug the Null Modem into.



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