DF-611 Standard Reversing Automatic Document Feeder: 100-sheet capacity; accepts paper sizes from 5-1/2” x 8-1/2” to 11” x 17”, weights up to 110 lb. index.

FS-608 Booklet Finisher: Provides sorting, grouping, stapling and 80-page booklet-making capabilities in addition to half-fold and tri-fold support.

FS-517 Staple Finisher: A basic finisher that provides 50-sheet stapling and customizable sorting, grouping and stapling functions.

PK-512 Punch Kit: Adds 2/3-hole punching capability to your FS-608 or FS-517 Finisher.

PI-503 Post Inserter:  Lets you add preprinted color or B&W cover sheets or chapter dividers to documents and reports.

OT-503 Output Tray: For the bizhub C550 base unit when no finisher is attached.

LU-301 Large Capacity Unit: Holds an additional 3,000 sheets of letter-size paper, bringing total paper capacity to 6,650 sheets.

IC-409 Fiery® Image Controller: Provides advanced color management tools for in-house printing.

FK-502 Super G3 Fax Board: Adds Super G3 Fax capability to the bizhub C550.

MK-704 Fax Connection Kit:  For FK-502 Super G3 Fax Board.

ML-501 Fax Multi-Line Kit:  Adds dual-line capability for high-volume facsimile traffic.

SP-501 Stamp Unit:  For DF-611 Document Feeder.

Spare TX Marker:  Replacement for TX marker stamp when marking becomes faint.

AU-101 Biometric Authentication Unit: Provides sophisticated user authentication to guard against unauthorized access to sensitive data.

EK-603 Local Interface Kit:  Provides connection for the AU-101 Biometric Authentication Unit to the bizhub C550 via USB 2.0.

WT-502 Working Table: Required to house the optional AU-101 Biometric Authentication Unit; also adds an extra work surface to make walk-up copy jobs easier.

SC-503 HDD Encryption Kit: To encrypt data stored on the hard disk drive in order to protect access to sensitive data.

SA-501 Scan Accelerator Kit:  Accelerates scan conversion and allows you to print or combine documents scanned to a User Box at the device.