The SCSI port is used for connecting these optional peripheral devices:
Phaser Copystation
To set up the Phaser Copystation and to connect it to your printer, refer to Chapter 2 of the Phaser Copystation User Manual. Refer to Phaser Copystation for ordering information.
External SCSI hard disk
Storage for additional downloadable fonts. You can connect one or more SCSI external hard disks to the printer for additional font storage. When you download a font to an external disk, the font remains there until you remove it.