Bought this to use with a Simplisafe Doorbell camera that was dropping its connection and sending jerky video, due to a low wifi signal level.I'm a very experienced hardware/software guy, but I had some difficulty with the initial setup. The instructions give 3 different ways to accomplish this. I tried the Tether phone app first, and hit the wall when it wouldn't allow me to select one of the newly-created _EXT networks.So I tried a second option, which was to use a web browser on a phone, or a computer -- which would have been my preference. But the instructions for using a computer say to unplug the network cable, if one is connected. This of course, implies that the computer can connect via wifi, which is very likely if the computer is a laptop, but not necessarily the case if it's a desktop. (my situation) So I had to keep looking for a solution.I finally ended up using a web browser on my phone and managed to complete the setup. There was some confusion, as my newly-created extended networks initially showed 'no internet' in their status, but that resolved within a few minutes.I then relocated the extender to an outlet which I guessed might provide a good signal to my front door, where the doorbell camera is located. It takes a minute or so for the device to connect to the network whenever it's moved to a different location, but it did connect, and I got status signals indicating that both the 2.4 and 5g networks were functioning.After changing the camera settings to use the new 2.4-EXT network, I saw an immediate improvement. I was able to set the camera to 1080p and observer smooth video, without jerking. And it's not disconnected a single time.Mission accomplished! Thanks TP-Link, for another helpful product!