Speedy Inks Remanufactured Ink Cartridge Replacement for HP 88XL C9396AN High Yield (Black, 2-Pack) For use in: OfficeJet Pro K5400, OfficeJet Pro K5400dn, OfficeJet Pro K5400dtn, OfficeJet Pro K5400tn, OfficeJet Pro K550, OfficeJet Pro K550dtn, OfficeJet Pro K550dtwn, OfficeJet Pro K8600 , OfficeJet Pro K8600dn, OfficeJet Pro L7480, OfficeJet Pro L7500, OfficeJet Pro L7550, OfficeJet Pro L7555, OfficeJet Pro L7580, OfficeJet Pro L7590, OfficeJet Pro L7600, OfficeJet Pro L7650, OfficeJet Pro L7680, OfficeJet Pro L7681, OfficeJet Pro L7700, OfficeJet Pro L7750, and OfficeJet Pro L7780 Page Yield: 2450* *Average cartridge page yield in accordance with ISO IEC 24711 Shelf Life: 12-18 Months Color: HY Black The use of aftermarket replacement cartridges and supplies does not void your printer's warranty