MTI PRO Universal HP 645A (C9733A) | Canon EP-86 (6828A004AA) Compatible High-Yield Magenta Toner Cartridge (Yield: 12,000) for HP Color LaserJet Printers: 5500, 5550 Series & Canon ImageClass: C3500, LBP-2710, LBP-2810, LBP-5700, LBP-5800 Series If you do not receive your product in an MTI-branded box, it is not a genuine MTI product. Let Amazon know. HP Printers: 5500, 5500n, 5500dn, 5500dtn, 5500hdn, 5550, 5550n, 5550dn, 5550dtn, 5550hdn | Canon ImageClass Printers: C3500, LBP-2710, LBP-2810, LBP-5700, LBP-5800 Color: Magenta | High Yield: 12,000 standard pages HP OEM Part #: C9733A | Canon OEM Part #: 6828A004AA