Multifunctional devices fall into three categories. Low-end devices are generally designed for small offices and home offices. These machines are typically built around a fax machine, but they connect to a computer for scanning and printing. They can also be used as a convenience copier for items that can feed through the fax scanner.

Mid-range MFDs are based around a small copier. These machines include a book platen for copying magazines, books, or other three-dimensional items. They also connect to a computer for printing and scanning, and they can send and receive faxes if attached to a phone line. These units are ideal for small workgroups, where workers can reduce the time needed to walk to larger office machines.

High-end MFDs combine copying and printing functions into a single unit. These units offer extremely fast printing, plus sorting and finishing options (such as stapling) normally not found on printers. The idea behind these machines is to provide copier-like functionality from a desktop computer, reducing the need for people to print a document and then walk it over to the copier to make multiple sets.