You can also use any parallel:centronics printer:Lport cable, but if you wanted to use the serial cable port, you need a Roland serial cable. I used to have the pin layout of one- it's not the normal straight through setup.
NOOOOOOOOOO the PNC-1000 IS NOISIER!!!!HAHAHAHAMaybe the slowest and loudest plotter in the world, but built like a tank. It will serve you well....