The Ubiquiti UniFi Security Gateway Pro 4 USG-PRO-4 Router Firewall is a powerful networking device from Ubiquiti Networks designed to provide advanced security features for your network. This firewall, with a model number of USG-PRO-4, is tested and reset to ensure optimal performance and reliability. It is equipped with a variety of security functions and is designed to offer top-notch protection for your network while maintaining efficient data flow. With a California Prop 65 warning included, you can be assured of its safety and compatibility in your networking setup.