Epson Apex 20020 - Manual (Page 131)

3. Remove the card from the slot (pull it straight up) and set
it on a soft surface with the components facing up. The
location of the jumpers is shown below. Change them as
needed and then reverse the three steps above to reinstall
it.
Removing an Option Card
If you need to remove an option card, simply reverse the steps
you followed to install it. Remove the screw securing the card
to the back of the computer and pull the card straight up and
out of the slot. Then carefully wrap the card, preferably in the
original packing materials, and place it inside its box for safe
storage. Cover the end of the empty option slot with the
original metal cover and secure it with the retaining screw.
Installing Option Cards 5-15