High-yield toner cartridge delivers outstanding results page after page in your Lexmark X748de and X748dte. Superior Lexmark design means precision pairing between printer and cartridge for value, quality and environmental responsibility you can count on. Lexmark Return Program cartridges are patented print cartridges sold at a discount in exchange for the customer's agreement to the license requirement that the cartridges will be used only once and returned only to Lexmark for remanufacturing or recycling. Average, continuous cartridge yield in one-sided (simplex) mode is up to 10,000 standard pages.