HP Ink 56 Black (520 pages). Get crisp, sharp, fade-resistant black text documents. This easy-to-install cartridge works with your HP printer to deliver reliable performance and consistent results. Compatible with: HP Photosmart 7755 Photo; HP Officejet 4215; HP PSC 1311; HP PSC 1209; HP Photosmart 7150; HP Officejet 6110; HP PSC 1210; HP Deskjet 5550 Color Inkjet; HP Deskjet 5650 Color Inkjet; HP Photosmart 7660 photo; HP Photosmart 7760 Photo; HP Photosmart 7960 photo; HP PSC 2175; HP PSC 2110; HP Officejet 5510; HP Officejet 5505; HP Deskjet 450cbi Mobile; HP Deskjet 9650; HP Deskjet 9670; HP Deskjet 450wbt Mobile; HP PSC 1315