You need this little router for this. It can have 3 modes. You can be a client, in which case if you plug in a device that doesn't know wifi, you can still use it to connect to the wifi network. It can be a smooth router, and it also has a mode that, if you connect it to your existing wifi network, it will further strengthen it where you set it up. It works very well for me and what’s important is that it’s damn easy to set up. Oh and if you need, you can install more at different points in the house. All it takes is that it creates a separate wifi name, and if that part of the house or where that little stuff is, you need to connect to it. This is not a problem, because after the 1st connection, your devices will be remembered and connected automatically.