You need to connect your router in the living room with your desktop in the bedroom upstairs. Trailing a long Ethernet cable through the house isn't a good look, and it's expensive to install additional wiring in the walls. With powerline, there's a better way. The TL-PA4022P KIT transforms your home's existing electrical circuit into a high speed network. No configuration is required - plug your adapter into a power socket and establish a connection within minutes. Note: Powerline adapters must be deployed in sets of two or more. Using advanced Home Plug AV technology, TL-PA4022P KIT provides stable, ultra-high-speed data transfer rates over a household electric circuit for up to 300 meters. TL-PA4022P KIT easily handles bandwidth intensive applications. Stream in HD, game online and download large files without interruption thanks to reliable powerline links. With its integrated power socket, the TL-PA4022P KIT provides ultimate convenience for your home. Connect an additional device or power strip to the adapter as though it were a normal wall socket. Compared with TL-PA4010P KIT, TL-PA4022P KIT is equipped with an additional LAN port to give you more wired network connections. Link two devices to the adaptor via Ethernet cables to enjoy fast, simultaneous wired internet on both. TL-PA4022P KIT automatically switches from its regular working mode to efficient Power-Saving mode when not in use, reducing energy consumption by up to 85%. Note: Powerline adapters should be deployed on the same circuit and in sets of two or more.