The IOGEAR Bluetooth 4.0 Micro Adapter allows users to connect up to three Bluetooth devices together and transfer even the largest files quickly and easily. Because the IOGEAR Bluetooth 4.0 Micro Adapter is so small you can easily plug it into your computer without blocking any surrounding USB ports. About the size of an adult fingernail, the IOGEAR Bluetooth 4.0 USB Micro Adapter allows users to connect to all the latest Bluetooth devices like cell phones, tablets, mice, keyboards, and more. The IOGEAR Bluetooth 4.0 USB Micro Adapter offers Bluetooth connectivity at a fraction of the size of normal Bluetooth USB adapters.