Http//extender.linksys.com is the web address for Linksys extender setup. Connect your device to the extender's WiFi first. Open any browser and type http//extender.linksys.com (note: the correct format is ). This takes you to the setup page where you can configure your extender. If the page doesn't load, check your connection or try 192.168.1.1 instead. The http//extender.linksys.com portal guides you through connecting the extender to your router's WiFi. Ensure you enter the correct URL with the colon after "http" for proper access.