Epson Endeavor WG - Manual (Page 67)

Note
Before you install an option card, see if you need to change
any jumper settings on the system board. For example, if
you install a mouse interface card, you need to change the
setting of jumpers J9 and J12. If you install a video card, you
may need to change jumpers J10 or J11. See page 2-6.
Follow these steps to install an option card:
1. If this is the first time you are installing a card in the option
slot, you need to remove the metal cover for that slot on the
inside back panel. Remove the retaining screw securing the
option slot cover to the computer. (Keep the screw to secure
the option card to the computer.)
option slot
cover
Installing and Removing Options 2 - 1 5