Compatible HP 56 Ink Cartridge. COMPATIBLE HP 56 Ink Cartridge (HP C6656AN). Black Inkjet Cartridge. HP Compatible COM-C6656AN Fits printer models: Photosmart 7550/7150/7350/7755, PSC 1210/1210v/1210xi/ 2110/2110v/2110xi/2175/2175v/2175xi/2210/2310/7960/ 7960w/7760/7760v/7760w/7660/7660v/7660w, Deskjet 450/450cbi/450ci/5100/5550/5150/5150W/5650, Officejet 5610/6110/6110xi, Digital copier printer 410, PSC 1350/1350v/1350xi/2405/2410/2410v/2410xi/2420