It's a portable WiFi router. According to the inquiry of ASUS official website, ASUS's Wi-FiGo Tinbox is a portable Wi-Fi router, which can easily extend Wi-Fi signals to other devices, including laptops, smartphones and tablets. The small tin box is built with a high-performance Wi-Fi chip, which can provide stable Wi-Fi signals and support various connection modes, such as USB, Bluetooth and Ethernet. It also has a detachable antenna, which can enhance the signal receiving ability.