This remanufactured Lexmark 0X340H21G gives the same page yield as the original and also maintains compatibility with all the same printers.A remanufactured Lexmark X340H21G toner is one that has been produced using parts of an empty original cartridge and generally a few compatible components too. The resulting hybrid of old an new in the remanufactured 0X340H21G, gives you the freshness of a new cartridge and the quality that results from Lexmark`s engineering.