Epson 10020 - Manual (Page 111)

Removing an Access Slot Cover
Some option cards, such as the video card, have an outlet for
connecting an external device. If you install an option card
that has an external connector for other equipment (such as a
monitor), you need to remove the plastic
access slot cover on
the computer’s back panel that corresponds to the option card
slot. Follow these steps:
1. Lay the back panel down as shown below. Each individual
access slot cover is held in position by a tab at the bottom
and a clip at the top.
2. Remove the appropriate cover by pushing down on the
clip, as shown above. Save the cover in case you need to
remove the option card later.
Installing Option Cards 4-7