Return Program toner cartridge delivers dependable performance page after page, year after year. Cartridge is designed for use with Lexmark C546DTN, X546DTN, X548DE and X548DTE. 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. High-yield cartridge generates up to 8,000 standard pages.