C8767WN Black Inkjet Cartridge compatible with the HP DeskJet 5740/ 5740xi/ 6520/ 6520xi/ 6540/ 6540dt/ 6540xi/ 6840/ 6840dt/ 6840xi/ 9800/ Photosmart 2610/ 2610v/ 2610xi/ 2710/ 2710xi/ 8150/ 8150xi/ 8450/ 8450xi/ PSC 16. The use of compatible supplies does not void your printer warranty.