Epson 486SX - Manual (Page 94)

5. Grasp the sides of the cover (toward the front of the
computer) and pull it firmly toward you, as shown below.
Then lift it up and off the computer.
Removing the Front Panel
You must remove the computer’s front panel if you need to
install or remove a disk drive from the external drive bay or if
you need to remove the subassembly from the computer.
Follow these steps:
1. Turn the computer so you are facing the front panel.
5-4 Accessing Internal Components