The HP CZ996A is a Stapler/Stacker finishing unit with an integrated 2/4-hole punch, designed to attach to HP's LaserJet Managed MFP M806 and M830 series print engines. It automatically staples, punches and stacks finished print jobs in-line, which print rooms and offices producing bound reports or hole-punched documents for filing rely on to avoid a separate manual finishing step. Like other finishing modules in this range, its output speed and paper handling depend entirely on the base M806/M830 printer it's attached to — this listing is for the finisher accessory only.