Lexmark Return Program Cartridges are sold at a discount versus the prices of regular cartridges in exchange for the customer’s agreement to use the cartridge only once and return it only to Lexmark for remanufacturing or recycling. Regular cartridges without this license/agreement sold at regular prices are also available. Regular cartridges are also recyclable at no cost through Lexmark Cartridge Collection Program.Compatible Printers: Lexmark Optra C 534 Series, Lexmark C 524 Series, Lexmark C 532, Lexmark C 520 N, Lexmark C 530, Lexmark C 534, Lexmark C 520, Lexmark C 532 Series, Lexmark Optra C 530, Lexmark C 534 Series, Lexmark C 522, Lexmark C 522 Series, Lexmark Optra C 520 N, Lexmark C 530 DN, Lexmark Optra C 534 N, Lexmark Optra C 522 N, Lexmark Optra C 534 DN, Lexmark C 532 DN, Lexmark C 524 N, Lexmark Optra C 524 DN, Lexmark C 522 N, Lexmark Optra C 530 DN, Lexmark C…