Our compatible HP OfficeJet 5510xi ink cartridges are a cost-effective alternative to genuine HP cartridges without sacrificing print quality. Our compatible HP ink cartridges will deliver the same clarity and readability as original HP cartridges at a fraction of the cost. To certify that these discount ink cartridges for HP OfficeJet 5510xi printers perform up to industry standards for excellence, we test every cartridge before shipment. Our comprehensive 1-Year warranty covers all aspects of the cartridge, including print quality, performance, and page-yield. We value our customers and guarantee your satisfaction with our products. In the unlikely event that you are not entirely satisfied with your purchase, we will replace the cartridge or provide you a refund."