PLANET™ GS-5220-16UP4S2X(R) s cost-optimized, 1U, Gigabit PoE Managed Switches featuring PLANET™ intelligent PoE functions to improve the availability of critical business applications. They provide IPv6/IPv4 dual stack management and built-in Layer 3 OSPF/static routing Gigabit switching along with 16 10/100/1000BASE-T ports featuring 75-watt Ultra PoE, 4 Gigabit SFP ports and 2 additional 10Gigabit SFP+ ports. With a total power budget of up to 400 watts for different kinds of PoE applications, the GS-5220-16UP4S2X(R) PoE Series provides a quick, safe and cost-effective PoE network solution for small businesses and enterprises. Redundant power source.