Compatible Catridge for use with: HP All-in-One Printers LaserJet 4100mfp, LaserJet 4101mfp HP Laser Printers LaserJet 4100 Series, LaserJet 4100mfp, LaserJet 4101mfp; Yields up to 10,000 pages

Compatible Cartridge for use with: Lexmark Laser Printers Optra T610n, Optra T612, Optra T614 Series, Optra T616 Series; Yields up to 25,000 pages

Compatible Catridge for use with: Lexmark Laser Printers Optra S 1250, Optra S 1255, Optra S 1620, Optra S 1625, Optra S 1650, Optra S 1855, Optra S 2420, Optra S 2450, Optra S 2455; Yields up to 17,600 pages

Compatible Cartridge for use with: HP Laser Printers LaserJet 4000 Series, LaserJet 4050 Series; Yields up to 10,000 pages