1. 2019 SpencerLab Monochrome Reliability study, commissioned by HP, compared Original HP cartridges with five brands of non-HP cartridges sold in Latin America (GT, CL, CO, MX ) for the HP Pro M402 and Pro M521 printers, HP 26A and 55A cartridges. For details, see https://

2. Program availability varies. See

3. HP Office-class printing systems include Enterprise-class devices with FutureSmart firmware 4.5 or above, Pro-class devices, and their respective Original HP toner, PageWide, and ink cartridges. Does not include HP integrated printhead ink cartridges. See and Digital supply-chain tracking, hardware, and packaging security features vary locally by SKU.