Epson Equity 286 PLUS - Manual (Page 151)

Then place the flat side of the mounting plate on the hard
disk drive and align the four holes on the mounting plate
with the four holes on the bottom of the drive, as shown
below.
4. Locate the four screws that you removed from the 21/4-inch
mounting frames and use them to secure the mounting plate
to the hard disk drive.
Installing the Drive
Follow these steps to install the hard disk drive in the vertical
mounting position:
1.
Locate the hard disk drive ribbon cable that came in the box
with your computer.
It
is a flat cable with three connectors
on it (one on each end and one in the middle).
B-12
Installing
and Removing Disk Drives