Easy Check Printing with RT MICR Toner RT Compatible Lexmark 51B1H00 MICR Toner Cartridge• Quantity: 1 magnetic toner cartridge for check printing• Yield: 8.5k pages based on 5% coverage, prints 25.5k checks @ 3 per page.• Compatible Printers: the RT compatible Lexmark 51B1H00 MICR cartridge is designed for Lexmark MS and MX Series MS417dn MS517dn MS617dn MX417de MX517de MX617de printers.The Renewable Toner Advantage • Better Quality And Support. The RT compatible Lexmark 51B1H00 toner cartridge is ISO 9001 and 14001 certified and tested to ensure superior performance. We know printing is important - that’s why we have a U.S. based customer support team. Contact us with any technical or product issues and we will be happy to assist you. • Earth Friendly. RT is your alternative solution that is cost effective and promotes a cleaner, greener future.Printing Tips • A common error is the “non-genuine” message. If this occurs with the RT compatible Lexmark 51B1H00 MICR cartridge, press OK or Continue continuously to dismiss the message. The printer will resume your print job. • Despite the extreme care we take in packaging, sometimes items are damaged during shipping and this can affect print quality. In this case, we immediately send a compatible Lexmark 51B1H00 MICR toner cartridge. If you order more than one cartridge, please test them all.Happy Printing!