Easy Check Printing with RT MICR Toner RT Compatible HP CE390X 90X MICR Toner Cartridge• Quantity: 1 magnetic toner cartridge for check printing• Yield: 24k pages based on 5% coverage, prints 72k checks @ 3 per page.• Compatible Printers: the RT compatible HP CE390X MICR cartridge is designed for HP LaserJet Enterprise M602dn M602n M602x M603dn M603n M603xh M4555f M4555fskm M4555h printers.The Renewable Toner Advantage • Better Quality And Support. The RT compatible HP 90X 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 HP CE390X 90X 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 an RT compatible HP 90X MICR toner cartridge. If you order more than one cartridge, please test them all.Happy Printing!