The Netgear AC1900 mesh wifi extender setup is a straightforward process that enhances your existing WiFi network coverage. To begin, plug the extender into an electrical outlet within range of your router. Press the WPS button on both your router and extender for a quick, automatic setup, or connect to the extender's network using a computer or mobile device. Open a web browser and follow the on-screen instructions provided by the Netgear Genie setup wizard. This will help you connect the extender to your existing WiFi network and configure settings for optimal performance. Enjoy extended WiFi coverage throughout your home or office.