This is a booklet-maker finishing accessory for the Lexmark CS/CX94x series colour laser printers — a stapling and hole-punch finishing unit that attaches to compatible CS/CX94x devices to fold and saddle-stitch booklets and punch holes into finished output, this variant configured for a 2-hole/3-hole punch pattern. Finishers like this are bought by print-room and office-services departments that need to produce finished booklets, manuals or reports in-house straight off a workgroup MFP rather than sending jobs out to an external print shop or finishing them by hand. It only works as an add-on to its matching CS/CX94x-series host printer, not as a standalone device.