4 x 10/100BASE-TX Fast Ethernet IEEE 802.3at PoE+ RJ45 copper ports (Port-1 to Port-4). 1 x 10/100BASE-TX Fast Ethernet non-PoE RJ45 copper port. One terminal block for master and slave power input (Power Range: 12 ~ 48V DC redundant power). Hardware DIP switch for Standard, VLAN and Extend mode selection; the Extend mode features 25-watt PoE transmission distance of 250m at speed of 10Mbps (Only for Port-1 to Port-4). Complies with IEEE 802.3at Power over Ethernet Plus, end-span PSE. Backward compatible with IEEE 802.3af Power over Ethernet. Up to 4 ports of IEEE 802.3af/at devices powered. Up to 120-watt PoE budget. Supports PoE power up to 36 watts for each PoE port. Each port supports 54V DC power to PoE powered device. Auto detects powered device (PD). Circuit protection prevents power interference between ports. Remote power feeding up to 100m in standard mode with 250m in extend mode. IP40 metal case. DIN-rail, wall-mount design or side wall-mount design. 12~48V DC redundant power with polarity reverse protect function. Fault alarm for power input failed. Supports 5KV DC Ethernet ESD protection. -40 to 75º C operating temperature. 4 real-time PoE power usage indicators.