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 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 E 350 D, Lexmark E 352 DN, Lexmark E 250 DN, Lexmark E 250 D, Lexmark Optra E 352 DN, Lexmark E 350 Series, Lexmark Optra E 350 Series, Lexmark Optra E 350 D, Lexmark Optra E 250, Lexmark Optra E 250 Series, Lexmark E 350 DN, Lexmark Optra E 250 D, Lexmark Optra E 250 DN, Lexmark E 352, Lexmark Optra E 250 N, Lexmark Optra E 350, Lexmark Optra E 350 DN, Lexmark E 250, Lexmark E 350, Lexmark E 250 Series, Lexmark E 250 N, Lexmark Optra E 352