MTI &copy; MICR Universal Troy 02-81351-001 MICR Toner Cartridge (Hi-Yield: 24,000) for TROY  M602, M602n, M602dn, M603, M603n, M603dn, M603xh If you do not receive your product in an MTI-branded box, it is not a genuine MTI product. Let Amazon know. For use in TROY & HP Printers: M602, M602n, M602dn, M603, M603n, M603dn, M603xh, M4555 MFP High Yield: 24,000 pages | Magnetic toner for check printing Replaces OEM Part #: Troy 02-81351-001 | HP CE390X (90X)