Easy Check Printing with RT MICR Toner RT Compatible HP 37A MICR Toner Cartridge• Quantity: 2 RT Compatible HP 37A MICR Toner Cartridges for printing professional payroll, small business and personal checks.• Yield: 11k pages based on 5% coverage, prints 33k checks @ 3 per page.• Compatible Printers: the RT compatible HP 37A MICR cartridge is designed for HP LaserJet Enterprise Flow MFP M631dn M631h M632z M633z / HP LaserJet Enterprise M607dn M607n M608dn M608n M608x M609x M609dh M609dn / HP LaserJet Enterprise MFP M631dn M631z M632fht M632h M633fh. For added security, use secure blank check paper stock and accounting software such as Quicken, Quickbooks and Versacheck.The Renewable Toner Advantage • Better Quality And Support. The RT compatible HP 37A toner cartridge is ISO 9001 and 14001 certified and tested to ensure superior performance for true image printing. 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 HP 37A 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 HP 37A MICR toner cartridge. If you order more than one cartridge, please test them all.Happy Printing!