Precision output, page after page:?North America results based on 2018 SpencerLab Color and 2019 SpencerLab Monochrome Reliability studies for North America, both commissioned by HP. Color study compared Original HP color cartridges with six brands of non-HP cartridges for the HP LaserJet Pro color 400 M451dn; CE410A/X, CE411A/412A/413A cartridges. See spencerlab.com/reports/HP-CLR-Reliability-NA-2018.pdf. Monochrome study compared Original HP cartridges with seven brands of non-HP cartridges for the HP LaserJet Pro M402 and Pro M521 printers; HP 26A and 55A cartridges. See spencerlab.com/reports/HPReliability-NA-2019.pdf.

Tamper-resistant chips, firmware and packaging:?HP office-class printing systems are select Enterprise and Managed devices with FutureSmart firmware 4.5 and up, Pro devices, LaserJet models 200 and up, with respective Original HP Toner, PageWide and Ink Cartridges. Does not include HP integrated printhead cartridges. Digital supply-chain tracking, hardware and packaging security features vary locally by SKU. See hp.com/go/SuppliesThatProtect and hp.com/go/SuppliesSecurityClaims.

100% of Original HP Toner Cartridges contain recycled content:?100% of Original HP Toner Cartridges contain between 5-45% post-consumer or post-industrial recycled content. Does not include toner bottles. See hp.com/go/recycledcontent for list.