Speedy Inks - 2PK Compatible Replacement for HP 508X CF360X High Yield Black Toner Cartridge For use in: HP Color LaserJet Enterprise M553dn, HP Color LaserJet Enterprise M553n, HP Color LaserJet Enterprise M533X Page Yield: 12500 Shelf Life: 24-36 Months Color: HY Black The use of aftermarket replacement cartridges and supplies does not void your printer's warranty