Epson EL 486UC - Manual (Page 89)

Installing the Hard Disk On the Mounting Bracket
You can install a hard disk drive on top of the mounting
bracket rather than under it. Refer to the illustration of the
mounting bracket on page 5-8 and the one below while
following these steps:
1. Remove the screw securing the mounting bracket to the base
of the computer and slide the mounting bracket toward the
diskette drive bays until the slots clear the tabs. (See the
illustration on page 5-8.)
2. Lift the mounting bracket out of the computer.
3. Turn the hard disk drive over and locate the four mounting
holes on the drive.
4. Position the bracket on the hard disk drive, aligning the holes
in the bracket with the holes on the drive.
Installing and Removing Drives 5-11