Print Checks Like a Pro with RT Universal MICR ProductsRT Compatible HP 42A Q5942A Universal MICR Toner Cartridge• Quantity: 1 Black MICR toner cartridge contains magnetic ink for business and personal check printing. • Yield: 10k pages based on 5% coverage, prints 30k checks @ 3 per page. Please Note: actual yield may vary depending upon the amount of print on the page and other factors. • Compatible Printers: the RT compatible HP Q5942A MICR cartridge is designed for HP LaserJet 4240 4240n 4250 4250dtn 4250dtnsl 4250n 4250tn 4350 4350dtn 4350dtnsl 4350n 4350tn printers.The Renewable Toner Advantage • Superior Support. We know printing is important - that’s why we have a U.S. based customer support team. •Lifetime Warranty. Contact us with any technical or product issues and we will be happy to assist you.Printing Tips • A common error is the “non-genuine” message. If this occurs with the RT compatible HP 42A Q5942A universal MICR cartridge, press OK or Continue repeatedly to dismiss the message. The printer will resume your print job.• If you order more than one cartridge, please test them all. Despite the extreme care we take in packaging, sometimes items are damaged during shipping and this can affect print quality. • Contact us in the case of a malfunctioning cartridge, so we can immediately send an RT compatible HP 42A MICR toner cartridge. Happy Printing!