PREMIUM QULAITY OF HP GENUINE BLACK TONER CARTRIDGES YIELDING 210 PAGES. COMPATIBLE PRINTERS (IF ANY): HP DESKJET 5440,HP OFFICEJET 6310,HP PHOTOSMART 7830,HP PHOTOSMART C3140,HP PHOTOSMART C3175,HP PHOTOSMART C3180,HP PSC 1507,HP PSC 1510