You can keep your existing router if it has a Gigabit WAN port and supports modern Wi-Fi standards, but using the ISP-provided router is often recommended for optimal performance and ease of setup.

Compatibility Considerations

Fiber optic internet requires a router that can handle high-speed connections via an Ethernet WAN port connected to the Optical Network Terminal (ONT) installed by your ISP . Routers designed for DSL or cable may not work properly because they lack the correct interface . To fully utilize fiber speeds, your router should support Gigabit or higher LAN/WAN ports and modern Wi-Fi standards like Wi-Fi 6 or 6E .

Performance and Speed

Older routers with Wi-Fi 4 or Wi-Fi 5 may limit your fiber internet speeds, especially if your plan exceeds 1 Gbps . Using a router that cannot handle the full bandwidth can create network congestion and reduce performance. Modern routers, including high-end consumer models, can often match or exceed the speeds provided by fiber, but you must verify the specifications .

Benefits of Keeping Your Router

• Customization: You can configure advanced settings, security features, and parental controls.
• Future-proofing: High-end routers may offer better coverage and device management than ISP-provided models .
• Flexibility: If you switch ISPs, a compatible router can often be reused without needing a new device.

Benefits of Using the ISP-Provided Router

• Plug-and-play setup: The router is pre-configured to work with the ISP's fiber network .
• Guaranteed compatibility: Ensures you can achieve the advertised speeds without troubleshooting.
• No additional cost: Many ISPs provide routers at no extra charge, though some may have a small monthly fee .

Recommendation

If your current router is modern, fiber-compatible, and supports your plan's speeds, you can keep it. However, if it is older, lacks a Gigabit WAN port, or does not support Wi-Fi 6, upgrading to a new router—or using the ISP-provided router—will ensure you get the full benefits of fiber internet, including high speeds, low latency, and reliable coverage throughout your home .