Linksys RE4000W N600 PRO Wi-Fi Range Extender (RE4000W) - (Certified Refurbished) This Certified Refurbished product is manufacturer refurbished, shows limited or no wear, and includes all original accessories plus a 90-day warranty. Connect the power cable. Plug in the range extender midway between your router and the area without Wi-Fi. Wait for a solid light on the cover of the range extender. Then, on a computer, phone, or tablet, connect to the Wi-Fi network &#034;Linksys Extender Setup.&#034; Set up using the web browser (follow steps in Quick Installation Guide)