Epson Apex 20020 - Manual (Page 26)

Using the Parallel Interface
The parallel interface on your computer is Centronics ®
compatible and uses a 25-pin connector. To connect a parallel
printer to your computer, you need an IBM-compatible printer
cable. If you are not sure which one you need, or whether you
have the right one, check with the store where you purchased
the printer.
Once you have the correct printer cable, follow these steps to
connect the printer to the parallel interface on the computer:
1. Place the printer next to your computer.
2. One end of the printer cable has a 25-pin, male connector.
Connect this end to the parallel port on the back panel of
the computer, as shown below. If the plug has retaining
screws, tighten them securely.