Epson Stylus Pro 7500 Startup Manual page 22

4. Use a cross-head screwdriver to remove the two screws
securing the shield plate to the optional interface slot, and lift
off the plate. Be sure to keep the screws to use when you
re-install the shield plate.
5. Set the DIP switches and jumpers on the card, if necessary.
See the interface card's documentation for details.
6. Slide the interface card along the slots on both sides of the
interface compartment. Push it in firmly to fully insert the
connector at the rear of the interface card into the printer's
internal socket.
7. Secure the interface card in the slot with the two screws
included with the interface card.
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Setting up the Printer with Your Computer