To complete Orbi Router Setup, start by connecting your Orbi router to the modem using an Ethernet cable and powering it on. Wait for the LED to turn solid white. Download the Orbi app or visit the web interface to begin configuration. Follow on-screen instructions to set up a WiFi network, update firmware, and customize settings. Ensure your device is connected to the Orbi network during setup. If issues arise, restart your router and modem, or reset the system. Once setup is complete, you can enjoy a seamless and high-speed network with your Orbi Router Setup.