Speedy Inks - Remanufactured Replacement for HP 641A HP C9720A Black Laser Toner Cartridge For use in: Color LaserJet 4600, Color LaserJet 4600dn, Color LaserJet 4600dtn, Color LaserJet 4600hdn, Color LaserJet 4600n, Color LaserJet 4650, Color LaserJet 4650dn, Color LaserJet 4650dtn, Color LaserJet 4650hdn, & Color LaserJet 4650n Page Yield: 9,000* | Color Black | *Average printer cartridge page yield in accordance with ISO 19752 Shelf Life: 24-36 Months The use of aftermarket replacement cartridges and supplies does not void your printer's warranty