Fax Connection Unit Type M19 Enables users to send and receive faxes on a sub MFP via a main MFP. This option is required on both the Main MFP that has the Fax Option Type M19 installed and on the Sub MFP(s) needing remote fax.
64 MB Fax Memory Unit Type M25 Memory expansion, which provides additional 64 MB memory for facsimile functions.
G3 Interface Unit Type M37 Up to two additional lines can be installed for a maximum total of 3 lines.
