Epson ES-1200C - Manual (Page 24)

2. Connect the 50-pin end of the cable to either the top or
bottom SCSI connector of the scanner; then fasten the
connector with the clamps on the sides of the connector, as
shown.
3. Connect the other end of the cable to the SCSI port of your
computer or the other SCSI device.
Notes:
The SCSI port of the Macintosh is the larger port with the
SCSI icon
over it.
If you are connecting the scanner to a SCSI device other than
the computer, use a cable with 5O-pin connectors on both
ends.
4. The connection is now complete. Connect the power cables.
5. Always turn on the scanner and other external SCSI devices
before you turn on your computer.
Setting Up the Scanner 1-11