Lower your printing cost with our compatible HP DeskJet 6840xi ink cartridges that are engineered with the same specifications as the original HP cartridge. Our compatible HP ink cartridges are economical and are designed following detailed product development protocols to ensure optimum print quality and proper page-yield. We inspect and test our ink cartridges for HP DeskJet 6840xi printers to ensure they offer the performance of an original HP cartridge for less. All products include a full 1-Year warranty and 100% customer satisfaction guarantee. We also provide lifetime customer support, thus providing our customers with complete peace of mind.