The Ubiquiti Networks USG-PRO-4 Enterprise Gateway Router is a fully working firewall device designed for enterprise networking. It has a minimum processor speed of 1 GHz and a minimum hard drive space of 4 GB. The unit is in retail format and comes with a license category for enterprise use. With its universal compatibility for operating systems, this gateway router is suitable for a variety of devices and offers a secure and reliable networking solution for businesses and organizations. Additionally, it includes a California Prop 65 Warning for safety awareness.