Premium Quality C8766WN Tri-Color Inkjet Cartridge compatible with the HP DeskJet 5740, 5740xi, 6520, 6520xi, 6540, 6540dt, 6540xi, 6840, 6840dt, 6840xi, 9800, Photosmart 325, 325v, 325xi, 375, 375v, 2610, 2610v, 2610xi, 2710, 2710xi, 8150. The use of compatible supplies does not void your printer warranty. Product Detail Ninestartechonline.com