Replace your empty HP LaserJet Enterprise M507dng toner cartridges and start printing again. These affordable toner cartridges will produce sharp printouts that easily match their name-brand counterpart. We offer a 1-Year warranty, 100% customer satisfaction guarantee, and lifetime customer support with every purchase. Our warranty covers every aspect of the cartridge including print quality and page-yield, as well as guaranteed compatibility with your printer. Buy with confidence knowing that we stand 100% behind our products.