Linksys PLWK400 Powerline AV Wireless Network Extender (Certified Refurbished) This Certified Refurbished product is fully tested and certified by Linksys to be look and work like-new. The product includes all original accessories and is backed by a 90 Day Manufacturers warranty Easily extend your wired and wireless network coverage anywhere in your home using existing powerlines while simultaneously broadcasting a Wi-Fi signal and enjoying the flexibility of a wired connection. Kit includes one Powerline AV adapter to connect router and one Powerline adapter with Wi-Fi access point to connect one Ethernet device and multiple wireless devices. Purchase additional kits to expand home network using electrical outlets. Easily add more wireless devices to your network by pressing the WPS button.