Epson EQUITY 386/33 PLUS - Manual (Page 105)

Removing a Hard Disk From the Vertical Position
You need to remove the hard disk drive from the vertical
position in the following cases:
You are replacing the drive
You are adding a second drive (either another hard disk
drive or a diskette drive) in the lower horizontal position.
Follow these steps:
1. Remove the retaining screw securing the hard disk drive
mounting plate to the subassembly and set it aside.
2. Tilt the hard disk drive slightly to the right and lift it off the
subassembly.
Installing and Removing Drives 5-17