HP A2W80-67901 Stapler/Stacker is a replacement finisher unit for the Color LaserJet Enterprise M855 and M880 series. It combines sheet stacking with stapling as part of the printer’s output finishing system.
In the finisher, sheets are aligned in a processing tray before stapling or offset stacking. This helps organize finished print jobs as they leave the printer. This part number identifies the Stapler/Stacker unit; punch and booklet-maker/finisher configurations have different part numbers.