This item fits the following printers: HP (Hewlett Packard): 507A, 507X, CE400A, CE400X, CE401A, CE402A, CE403A, Enterprise 500 Color M551dn, Enterprise 500 Color M551n, Enterprise 500 Color M551xh, Enterprise M551, LaserJet Enterprise 500 M575dn, LaserJet Enterprise 500 M575f, LaserJet Enterprise Color M551, LaserJet Enterprise M 551, LaserJet Enterprise M551, LaserJet Enterprise M575dn, LJ Enterprise 500 Color M551dn, LJ Enterprise 500 Color M551n, LJ Enterprise 500 Color M551xh