As you get the Linksys RE6400 extender you will require to set it up first to avail of its benefits. While unboxing the packed box, you will also get a manual guide through which you can have an overview of the setup process. Also, from that guide, you can collect the login credentials, web, and IP addresses of your device that you will require in the setup. After going through that guide, you can start the Linksys RE6400 setup process using any of three different methods. Which are the WPS, web-based, and WiFi app. 

But, first, let’s go through the setup instructions, in the first WPS method, your existing router must have a WPS button. Through this, you can easily set up your device by using and pressing the WPS buttons only. But, in the other setup ways, you need to go to the setup window to perform the process following the screen directions. In the web-based approach, you can visit the setup portal on your device’s web browser and that device must be connected to the network. Whereas, in the app setup method, you can access the same setup window on the Linksys WiFi app that you need to install on your smartphone.