Genuine HP c6656ae black ink cartridge (no 56) 19ml for use in the HP deskjet 450ci/cbi, 5150, 5550, 5552 & HP photosmart 7000 series & HP psc 1200 series including 1205, 1210, 1215, 2100 series, 2200 series & HP officejet 1110, 4110, 6110, the 5600 series (including the 5610) & HP digital copier 410.