Epson LQ-2170 User Manual page 103

2. Remove the screws from the shield plate on the back of the
printer and remove the plate.
3. Slide the interface card along the slots on both sides of the
interface compartment. Push in firmly to make sure you fully
insert the connector at the back of the interface card into the
printer's internal socket. Then re-insert the screws and tighten
them.
To remove the interface card, reverse the steps above.
Using Printer Options
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