NUINKO 2 Pack Remanufactured HP 901XL Black HP 901 Color Ink Cartridge for OfficeJet 4500 J4580 J4680 J4660 J4550 J4540 Printers (1 Black 1 Color) Brand: Nuinko For use with HP printers: Please verify your printer model for compatibility below After installing you may also receive an alert that says, Used, Refilled, or Counterfeit Cartridge Detected. This alert is triggered because the printer recognizes the remanufactured cartridge as a refilled cartridge. Please press CONTINUE or OK to continue printing. 1 Black 1 Color