Epson 386/25 - Manual (Page 221)

Pull the panel away from the front of the computer.
If you are going to install a hard disk drive in the lower
horizontal position, set the front panel aside and go to
step 4.
If you are installing a diskette drive, remove the slot cover
from the front panel, as described in step 3.
3. Place the front panel face down and use a screwdriver to
remove the screws securing the slot cover to the panel. Lift
out the slot cover, as shown below.
I
I
slot cover
Set the front panel, slot cover, and screws aside.
Installing and Removing Disk Drives B-29