The HP OfficeJet Pro K550 uses remanufactured ink in four colors. The black is HP 88XL (C9396AN), standard capacity at about 2,350 pages. The cyan HP 88XL (C9391AN), magenta HP 88XL (C9392AN) and yellow HP 88XL (C9393AN) each yield about 1,210 pages. The same supplies also fit the OfficeJet Pro K550dtn, OfficeJet Pro K5400 and OfficeJet Pro K8600. Same-day shipping on most orders.
