Epson Equity 286 PLUS - Manual (Page 149)

Keep the four screws so you can use them to secure the
mounting plate to the hard disk drive. Then set the drive
aside with the component side facing up.
Removing and Attaching the Mounting Plate
If you are installing a new hard disk drive in your computer, you
need to attach a hard disk drive mounting plate to the drive.
This mounting plate is currently attached to the side of the
subassembly, as shown below.
Follow these steps to remove the mounting plate from your
computer:
1.
Turn the computer so that the front panel is facing you. The
vertical mounting area is located behind the front panel on
the right side of the subassembly.
B-10 Installing and Removing Disk Drives