Epson EL 486UC - Manual (Page 94)

4. Align the slots at the side of the drive bay with the mounting
holes in the drive. Then secure both sides of the drive to the
drive bay using the retaining screws.
Connecting the Drive and Power Cables
To connect the drive to the computer, you need to connect both
the drive ribbon cable and a power supply cable. Follow the
steps below.
1. If you are installing a diskette drive, locate the diskette drive
ribbon cable. (The connector in the middle of the cable is
already connected to the system board.)
5-16 Installing and Removing Drives