Premium Remanufactured C8765WN (HP 94) Black Inkjet Cartridge fully 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.