There are two 10/100Mbps RJ45 ports and four 10/100Mbps PoE ports. IEEE 802.3at/af PoE port standard (maximum output power of 35 W). The standards are IEEE 802.3, IEEE 802.3u, and IEEE 802.3x. PoE ports have 6 KV surge protection. Long-range transmission up to 300 meters. wire-speed transmission. switching between stores and forwards. sturdy shell made of high-strength metal. dependable design without fans.