PoE SUPPORT - Compact 5-port (4 Ports PoE support) Ethernet switch with 10/100/1000Mbps automatic MDI/MDI-X crossover for plug-and-play. Easy to use and DIN rail mountable with built-in bracket, Robust IP30-rated housing. LOW POWER CONSUMPTION - Energy-Efficient Ethernet, 48~57V DC terminal block input (No power supply, but DC-Jack Power Pigtail Cable included). FAST DATA TRANSMISSION: Each port supports both 10/100/1000Mbps speed auto negotiation, Supports IEEE 802.3, 802.3u, 802.3x standard. ROBUST AND RELIABLE - Can be used in extreme industrial environments; Supports a wide range of operating temperatures -30 ~ +75°C (-22 ~ 167°F). SAFETY & ENVIRONMENTAL CERTIFICATION - WDH-5GT-POE has passed UL, cUL, CE, FCC, PSE, REACH (SVHC) and RoHS certifications. Low Power Consumption, Overload, Reverse connect protection. Safe and quality-reliable, so theres no worries about damaging functional devices.