Linksys AC1200 Boost EX Dual-Band Wi-Fi Range Extender (RE6400) Refer the user manual below for troubleshooting Simple setup with Push Button Connect and Spot Finder Technology for optimal placement and performance Boosts Wi-Fi signal coverage up to 7,500 square feet Eliminates Wi-Fi dead zones throughout a home including, patio, garage, second floors and more Wi-Fi Speeds up to N300 + AC867 Mbps Expand Wi-Fi coverage in large and multi-storied homes with two adjustable, external antennas Gain enhanced wired speeds for a Smart TV, gaming console, Blu-ray Disc player other Wi-Fi device using the Gigabit Ethernet port Works with all Wi-Fi Routers