These four lean managed switches include Ethernet ring protection switching (ERPS) and rapid spanning tree (RSTP) for network redundancy, port mirroring and onboard firewall. They come with a dynamic Web-based dashboard and topology mapping to provide instant updates on network status and system health. This alerts technicians to problems within their systems and increases network availability. Several variants are available. The 852-1812, 852-1813 and 852-1813/000-001 come with eight RJ45 ports, with the 852-1816 equipped with 16 ports. The 852-1813 and 852-1813/000-001 also have two additional fiber-optic ports. The 852-1813/000-001 comes with PoE+. All ports have a speed of 1 GB.