Speedy Inks - Compatible Replacement for HP 11X Q6511X High-Yield Black Laser Toner Cartridge For use in HP: LaserJet 2420, LaserJet 2420d, LaserJet 2420dn, LaserJet 2420n, LaserJet 2430, LaserJet 2430dtn, LaserJet 2430n, & LaserJet 2430tn Page Yield: 12,000 Shelf Life: 24-36 Months Color: Black The use of aftermarket replacement cartridges and supplies does not void your printer's warranty