ICP DAS NS-205PSE Industrial Unmanaged 5-Port 10/100 Power Over Ethernet (PoE) Switch Compact 5-port PoE Ethernet switch with automatic MDI/MDI-X crossover for plug-and-play; Easy to use and DIN rail mountable FAST DATA TRANSMISSION: Each port supports both 10/100Mbps speed auto negotiation, Supports IEEE 802.3, 802.3u, 802.3x ,802.3af (Power over Ethernet) standard ROBUST AND RELIABLE - can be used in extreme industrial environments; Supports a wide range of operating temperatures -30C ~ +75C (-22F ~ 167F) LOW POWER CONSUMPTION - 4 PoE RJ45 ports with Power Sourcing Equipment (PSE) operation. HIGH PROTECTION - 3.2 Gbps high performance memory bandwidth, Over-temperature, over-current and over/under-voltage detection