Connecting Fiber Optic Cable to Ethernet Port: Carefully insert the fiber optic cable connector into the Ethernet port, aligning the keying mechanism if applicable. This comprehensive guide will explore the importance and benefits of this integration, provide an understanding of fiber optic cable and Ethernet ports, discuss their compatibility, and offer a. The EK1501 EtherCAT Coupler with multi-mode fiber-optic connection is the link between the EtherCAT protocol at fieldbus level and the EtherCAT Terminals. The coupler converts the passing telegrams from Ethernet 100BASE-FX to E-bus signal representation. Find gigabit media converters with reliable performance on Amazon. Power input (if not using PoE).