Upgrade your Printronix T4000 with this high-quality Bluetooth Upgrade Kit. This kit, manufactured by Printronix, is the perfect solution for adding Bluetooth connectivity to your T4000 printer. With a weight of 0.99kg, this upgrade kit is easy to install and will seamlessly integrate with your printer. Don't miss out on the convenience and flexibility of Bluetooth connectivity - upgrade your Printronix T4000 today!