Epson LQ-570 User Manual page 92

Remove the screws from the interface cover. Remove the
2.
interface cover.
Be sure to set any switches and jumpers on the card. See the
3.
interface cards manual for details.
Slide the interface card along the slots on both sides of the
4.
interface compartment. Push in firmly to make sure you fully
insert the connector at the rear of the interface card into the
printer's internal socket.
Re-insert the screws and tighten to complete installation of the
5.
optional interface.
Removal of the interface card is the reverse of the steps above.
Using Printer Options
Interface Cards
4-15