The HP-21XL Black Ink Cartridge is a genuine HP black ink cartridge that will enable you to benefit from high-yield printing.The HP-21XL Black Ink Cartridge has been specially made for use with HP PSC 1402, 1410, 1415 and 1417 all-in-one printers as well as the Deskjet F310, F370, F380, D1360, D2360, and D42460 series inkjet printers.