Powerline adapters are devices that allow you to extend your internet connection using the existing electrical wiring in your home. By plugging one adapter into a wall socket near your router and connecting it via an Ethernet cable, you can send internet signals through the electrical system. Then, you can plug a second adapter into a socket in another room to receive the internet connection, providing a wired network without the need for long cables. These adapters are particularly useful in areas where Wi-Fi signals are weak or unreliable. They can help improve internet speeds and connectivity for devices like smart TVs, gaming consoles, and computers that require a stable connection.