Renewable Toner Compatible MICR Toner Cartridge Replacement for HP 42A Q5942A for Laserjet 4240 4250 4350 DEPENDABLE CHECK PRINTING. RT MICR Cartridge Replacement for HP 42A SUPERIOR QUALITY. The RT Compatible HP Q5942A MICR Cartridge contains high quality magnetic toner that guarantees bank acceptance REPLACES OEM #: HP 42A Q5942A HP 42X Q5942X | Yield: 10k standard page; prints 30k checks @ 3 per page FOR USE in HP LaserJet 4200 4200n 4200tn 4200dtn 4200dtns 4200dtnsl 4240 4240n 4250 4250n 4250dtn 4250dtnsl 4250tn 4350 4350n 4350tn 4350dtn 4350dtnsl Printer Series LIFETIME WARRANTY. We always honor our warranty, even if the Amazon return window has closed. Contact us directly with any questions or issues.