The Allen-Bradley 1756-EN3TR is a ControlLogix communication module designed to operate as an EtherNet/IP bridge within industrial control systems. It features two (2) RJ45 Ethernet interfaces supporting 10/100 Mbps transmission rates, allowing high-speed and redundant network connections. Additionally, it includes one (1) USB communication port capable of 12 Mbps data transfer for configuration and diagnostics. Supporting both Device Level Ring (DLR) and linear network topologies, the 1756-EN3TR offers flexible integration options and can be installed in either a local or remote ControlLogix chassis, providing reliable communication for complex automation environments.