The HP OfficeJet 5500 Series uses two ink cartridges. The black is the HP 56 (C6656AN), good for about 450 pages. The tri-color is the HP 57 (C6657AN), good for about 391 pages. Both are standard-capacity remanufactured ink. The same supplies also fit the OfficeJet 4110, OfficeJet 4215 and OfficeJet 5510. Same-day shipping on most orders.
