Renewable Toner Compatible MICR Toner Cartridge Replacement HP 38A Q1338A HP 42A Q5942A for LaserJet 4200 4240 4250 4350 Dependable check printing. RT MICR Cartridge Replacement for HP 38A Q1338A / HP 42A Q5942A Replaces OEM #: HP Q1338A | HP Q5942A Yield: 12000 standard pages; prints 36k checks @ 3 per page For use in HP LaserJet Printers: 4200 4200n 4200tn 4200dtn 4200dtns 4200dtnsl 4240 4240n 4250 4250n 4250dtn 4250dtnsl 4250tn 4350 4350n 4350tn 4350dtn 4350dtnsl Lifetime Warranty. We always honor our warranty, even if the Amazon return window has closed. Contact us directly with any questions or issues.