A:Answer Google Wifi (Original or the newer improved version) is a "mesh system" that passes the wifi signal from your present router or modem through an easily installed Google WiFi router that's hardwired using a supplied plug-in cable) into the existing router. Depending on the size (square footage and layout) of your house or apartment, more Google WiFi "points" are spread through the house and connect to the primary via WiFi, spreading a strong WiFi signal throughout the area. The points only require an electrical outlet. Using a smartphone, the whole system can be set up very quickly without professional assistance and can be expanded by adding points later if you want to start smaller. We have 4 "points' and the Google router spread over three floors and about 4000 square feet with strong signals throughout including the rear deck, front yard, and driveway area. I tried various other routers and WiFi "extenders" which never seemed to work very well (or, in the case of extenders,, for very long). This is system has been working well for several years now and I just added an additional point for my wife's office area in a far corner of the house to improve that signal. It was as simple as plugging it in and pushing the "add" button in the smartphone software. There are two Google systems now, but they are interchangeable. The new "routers" are more powerful than the original, so you may not need as many points to connect everything. Don't hesitate. If you have signal issues in your home or apartment, this system will most likely fix that issue for you and you shouldn't need any help installing it yourself.