Compatible HP 10 Black C4844AE. For the following machines: Business Inkjet 1000, 1100, 1200, 2200, 2300, 2600, 2801 Designjet 10ps, 20ps, 50ps, 70, 100, 110, 111, 120, 500, 510, 800, 815, 820mfp, Officejet 9110, 9120, 9130, Pro K850series. With a Yield of 1750