Linksys' N600 PRO Wi-Fi Range Extender (RE4100W) eliminates dead spots in your home by increasing the router's Wi-Fi signal and extending coverage up to 7,500 Sq. Ft. The RE4100W features Cross-Band Technology, which receives information on one band and transmits on another, resulting in a stronger, more consistent signal throughout your home. Range extender easily connects to your current network. No need to modify router settings! Using any mobile device, Spot Finder Technology shows you where to place range extender for optimal performance. Follow prompts for quick and easy setup. With Wi-Fi Audio you can connect a stereo system or speakers to range extender and instantly stream music from your smart device or computer.