Epson User Manual page 133

4. Slide the drive into the front of the bay and secure it to the
bay using the four screws that came with the drive.
5. Connect the appropriate drive ribbon cable to the drive.
If you are installing an IDE device, follow the instructions
under "Connecting the Cables to the Front Internal Drive."
If you are installing a diskette or tape drive, use one of the
connectors on the diskette drive ribbon cable. If your drive
has a connector containing pins (a header connector), be
sure to align pin 1 of the drive connector with the side of
the cable containing the red wire. If your drive has a
card-edge connector (with gold contacts on each side of a
flat plastic connector), align the key-way in the cable
connector with the gap in the drive connector.
If you are installing another type of drive, see the
documentation that came with it for instructions on
connecting its drive cable.
6-12 Installing and Removing Tower Drives