Speedy Inks - Compatible Dell C2660dn C2665dnf C2660 Extra High Yield Black 593-BBBU, RD80W Toner Cartridge For use in Dell: C2660dn and C2665dnf Our compatible cartridge can be used instead of these manufacturer part numbers:high-yield: 593-BBBU, RD80W, 67H2Tstandard-yield: KWJ3T, 593-BBBR, HD47M * This toner management system is not endorsed, associated, designed or approved by Dell. 100% Quality Satisfaction Guarantee The use of aftermarket replacement cartridges and supplies does not void your printer's warranty