The Rosewill AC1200UBE is a black wireless USB adapter that provides 11ac dual-band connectivity, with both 2.4GHz and 5GHz frequencies available. This adapter, designed to fit a PC, offers fast and reliable Wi-Fi access for computers and laptops. With its USB 3.0 port, the Rosewill AC1200UBE allows for easy connectivity and provides a boost to your home networking and connectivity setup. Its compact size and dual-band capabilities make it a versatile option for users looking to enhance their internet connection.