Printronic Remanufactured Ink Cartridge Replacement for HP 950xl ( Black,Cyan,Magenta,Yellow , 12-Pack ) Brand: Printronic These are remanufactured ink cartridges. One year factory warranty against product defect. When installing the cartridge you may receive a low ink alert such as, Refilled or Depleted Cartridge Detected. Please press CONTINUE or OK to continue printing. Ink levels are NOT accurate for remanufactured cartridges because the cartridge chip is unable to be reset. 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.