Using Optional Interfaces
5.Slide the interface board along the slots on both sides of the compartment. Push it in firmly to fully insert the board’s connector into the printer’s internal socket.
6.Secure the interface board in the slot with the two screws included with the interface board.
7.Connect the proper interface cable to the interface board and to your computer. If the cable has a grounding wire, connect it to one of the screws securing the parallel interface.
Also, if you are using more than one computer, reconnect the other interface cable.
8.Make sure the printer is turned off. Then plug in the power cord.
In most cases, the printer automatically detects the interface you’re using. However, if you have trouble printing through an installed interface board, you may need to change the printer’s I/F (interface) mode setting. See page
To remove the interface board, follow the above steps in reverse order.