Compatible Black HP Toner Cartridge Q2670A (6,000 Page Yield) for HP Color LaserJet 3500, HP Color LaserJet 3500n, HP Color LaserJet 3550, HP Color LaserJet 3550n Toner cartridges are compatible toner cartridges (non OEM). Toner cartridges are all professionally tested thoroughly before they are shipped. Toner cartridges are manufactured with new components, new toner, and air-sealed in an ISO-9001 / ISO-14001 quality certified factory.