Epson Endeavor - Manual (Page 62)

Once the connectors reach the slot, push the card in firmly
(but carefully) to insert it fully. You should feel the card fit
into place. If it does not go in smoothly, do not force it; pull
the card all the way out and try again.
5. Secure the end of the card to the computer with the retaining
screw.
Note
If you installed a high-resolution graphics adapter card, see
“Using the Alternate VGA Interface,” on page 2-26, for
further instructions.
Installing and Removing Options 2-19