Speedy Inks - Remanufactured Replacement for HP 122A Q3960A Black Laser Toner Cartridge For use in HP: Color LaserJet 2550, Color LaserJet 2550L, Color LaserJet 2550Ln, Color LaserJet 2550N, Color LaserJet 2820, Color LaserJet 2830, & Color LaserJet 2840 Page Yield: *5,000 | *Average printer cartridge page yield in accordance with ISO 19752 Shelf Life: 24-36 Months Color: Black The use of aftermarket replacement cartridges and supplies does not void your printer's warranty