The HP DesignJet Z9+ Pro Gloss Enhancer Upgrade Kit is compatible with HP DesignJet Z9+ Pro printers. This kit includes the USB dongle key, purger and user manual. With this kit you can produce images with uniform gloss from highlights to shadows, and minimize bronzing on most photo papers (except matte-finish papers). No registration needed and easy to install. Accessory Type: Gloss Enhancer Upgrade Kit; For Use With: HP DesignJet Z9+ Pro Printer,