Epson Action Laser II - Manual (Page 218)

The Optional Interface Board
You can use one of the following optional interface boards for your
printer. For information on other types of interface boards, contact
your Epson dealer.
Available interface boards:
32 Kbyte serial interface (C823071)
32 Kbyte Parallel interface (C823101)
Installing the interface board
To install an optional interface board, you need a cross-head
screwdriver. Set the DIP switches on the optional interface board
according to the instructions in its accompanying manual before you
install the board.
1. Turn off the printer. Then unplug the power cord and disconnect
all interface cables from the rear of the printer.
WARNING: Do not remove any screws other than the
brass-colored screws specified below.
2. Use a cross-head screwdriver to remove the two brass-colored
screws securing the shield plate; then lift off the plate as shown.
A-10 Options