Epson ActionTower 3000 Computer User Manual page 59

Follow these steps to install an option card:
1. Remove the retaining screw securing the option slot cover
to the computer, as shown below. (Keep the screw to secure
the option card to the computer.)
2. Slide out the slot cover and set it aside. (Store it in a safe
place in case you remove the option card later.)
3-16 Installing and Removing Options