In most cases, yes, you can use your existing router with fiber optic internet, provided it has a WAN (Wide Area Network) Ethernet port and your ISP provides a modem/ONT with an Ethernet output. Can I get a non Wi-Fi router? Yes, you can get a non Wi-Fi router. Understanding compatibility, potential limitations, and when an upgrade is necessary will ensure you get the most out of your high-speed connection. The wireless technology has become so widely integrated. Both the router and James require separate electrical plugs. What router would you recommend? I'm looking for the absolute best—price isn't a. Correct me if i'm wrong, but 1Gb/s+ bandwidth comes to you (from the ISP) via a fiber optic cable. Which either needs a fiber optic port, or an SFP port, plus a fiber otpic-to-sfp tranceiver.