Plug the SFP module into the router's SFP port for fibre optic connectivity. No additional settings need to be made. Only one type (RJ-45 or SFP) of connection can be used at a time with a combined WAN port. If the SFP module is installed, the RJ-45 connector will not. Many telecom operators and Internet service providers use Active Ethernet technology to connect remote offices and private homes via an optical line. The core question revolves around how your existing router, typically designed for cable or DSL modems, will interface with the. To connect your fiber optic cable to a router, ensure you have the following: Fiber optic modem (ONT): Most fiber connections require an Optical Network Terminal (ONT), provided by your ISP. Routers designed for DSL (which uses phone line inputs) or cable (which uses coaxial inputs) won't work. Understanding compatibility, potential limitations, and when an upgrade is necessary will ensure you get the most out of your high-speed connection. This specialized equipment serves as the.