This remanufactured HP C4906AN (HP 940XL) high-yield black inkjet cartridge is an original Hewlett Packard product that has been remanufactured using both OEM and non-OEM parts. It features a professionally manufactured pigment-based ink formula for archival print life and color stability. The cartridge is equipped with a 'smart chip' that optimizes print quality and monitors ink levels. Remanufactured cartridges provide an economical alternative to original HP products without sacrificing quality. We offer a 100% Quality Satisfaction Guarantee on our remanufactured C4906AN ink cartridges.