Epson EPL-N2750 Reference Manual page 157

4. Remove all interface cables from the interface connectors.
5. Remove the two screws that secure the interface slot cover
and remove the cover.
6. With the component side of the optional interface card facing
up, slide the interface card into the grooves of the interface
slot as shown below. Push the card firmly to lock it into place.
7. Secure the interface card by fastening the two retaining
screws.
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Using Options