Powerline units turn your home's electrical wiring into a wired network, moving data right through your walls and floors. The TL-PA7017P KIT comes with two powerline units that set up in minutes, are simple to use and plugs into any power outlet to keep wired connections strong where you need them. Note: Powerline adapters must be deployed in sets of two or more. Additonal powerline units are sold separately. TL-PA7017P KIT is compatible with all TP-Link powerline adapters.