Printronic Remanufactured Ink Cartridge Replacement for HP 26 51626A (1 Black) Supported printers: HP DesignJet 200, HP DesignJet 220, HP DesignJet 600, HP Deskjet (1st Version), HP Deskjet 400, HP Deskjet 400L, HP Deskjet 420, HP Deskjet 420C, HP Deskjet 500, HP Deskjet 500C, HP Deskjet 510, HP Deskjet 520, HP Deskjet 540, HP Deskjet 540C, HP Deskjet 550, HP Deskjet 550C, HP Deskjet 560, HP Deskjet 560C, HP Deskjet Plus, HP DeskWriter (1st Version), HP DeskWriter 510, HP DeskWriter 520, HP DeskWriter 520C, HP DeskWriter 540, HP DeskWriter 540C, HP DeskWriter 550 Individually factory sealed Sold exclusively by OCinkjet Remanufactured under strict standards One year factory warranty against product defect