HP Remanufatured Ink Cart C4844A, No. 10 Black . Compatible with C4844A, #10 Black - Black. Fits Models: DesignJet 100, 110, 500, 70, 800, 815, 820, CC800PS, DeskJet 800, OfficeJet 800, 9100, 9110, 9120, 9130, OfficeJet Pro K850, Business Inkjet 1100, 1200, 2200, 2230, 2250, 2280, 2300, 2600, 2800, 3000