There are two methods for New Extender Setup: using an Ethernet cable and through WiFi connection. Both methods require you to access www.mywifiext.net smart wizard. Important Note: If you are setting up Netgear Extender on Windows device, use mywifiext.com web address for accessing the default login page. On the other hand, make use of mywifiext.net local if you want to install the extender on Mac OS devices like iPhone, iPad, Mac, etc.