1. Connect to the Extender's Network: Ensure your computer or device is connected to the WiFi network of the range extender.
2. Open a Web Browser: Open a web browser on your device.
3. Enter the IP Address: Type the default IP address of your Linksys WiFi extender into the address bar. This address is usually printed on the bottom or back of the device, or in the user manual. Common IP addresses include 192.168.0.1 or 192.168.1.1 . 
4. Log In: You will be prompted to log in to the device. The default username is usually "admin" and the default password is often "password". Make sure to change the default admin password to a strong, unique one. Linksyssmartwifi.com

After logging in, you can manage and optimize your extended network’s settings, security, and other configurations. If you have trouble connecting, make sure the extender is plugged in and try reconnecting to the Linksys Extender Setup WiFi network on your device.