The Lexmark MX421adn laser toner from LD Products is a professionally remanufactured laser toner cartridge that is guaranteed to meet or exceed the print quality of the OEM toner cartridge. Purchasing our Lexmark MX421adn laser toner is an excellent way to save money without sacrificing quality. Our Lexmark MX421adn laser toner cartridge has a 'Lifetime 100% Quality Satisfaction Guarantee'. The use of our remanufactured laser toner for the Lexmark MX421adn does not void your printer's warranty. OEM (Original Equipment Manufacturer) laser toner cartridges are also available for your Lexmark MX421adn printer.