This is a layer 2, network managed industrial Ethernet fiber switch with twelve (12) 10/100/1000Base-T/TX ports and POE+ (30 watts), designed to transmit and receive 10/100/1000Mbps data over four selectable SFP options. Units feature MDI/MDIX Full/Half Duplex Auto-Negotiation, 10/100/1000Base Auto-sensing and compatibility with major Network Protocols. The optical interfaces operate at a 1000Mbps Ethernet rate. Redundant ring, plug-and-play performance, ensures ease of installation; no user electrical or optical adjustments are required. Features included are advanced network management functions as QoS, VLAN, IGMP, snooping/GMRP, Port Trunking, SNMP V1/V2/V3 RTSP/STP and LLDP; low power consumption, LED indicators for monitoring equipment link, operating status activity and auto resettable voltage transient fuses. Additionally, they are designed with DINRail or Wall mount, fan-less, IP40 rated Aluminum enclosures in industrial extended temperature version. With dual (2) redundant inputs 12- 55VDC voltage, an outstanding product in transmission of 10/100/1000Mbps Ethernet signals for industrial Layer 2 Managed Network Installation. This industrial grade product includes a terminal block and does not come with a power plug.