improve internet stability. During the linksys re6400 setup, users need to place the extender near the main router, power it on, and connect it to the WiFi network using a browser-based setup page. Proper setup ensures seamless roaming, faster speeds, and reliable connectivity for multiple devices. If the linksys re6400 setup is not completed correctly, users may face slow speeds or connection drops. Completing the setup properly helps maximize performance and enhances overall WiFi experience.