The Linksys RE6300 AC750 Wi-Fi Gigabit Range Extender is a white extender that supports 4G cellular network technology. It operates on both 2.4 GHz and 5 GHz frequency bands, providing a boost to your home Wi-Fi network. It is designed to enhance the range and speed of your existing wireless network, making it ideal for improving connectivity in larger homes or areas with Wi-Fi dead zones.