Nano and Mighty UB400 is highly portable and much smaller than a flash drive. Plug and play in Win8/8.1/10 systems to enjoy a wireless communication with Bluetooth-enabled devices. Connect with Multiple Devices via Bluetooth 4.0 UB400 supports advanced Bluetooth 4.0 and enables wireless connectivity with a wide range of devices such as computers, printers, phones, headsets, speakers, keyboards, controllers, etc. Main Features Ease of Use - Bluetooth 4.0 - Backward compatible with Bluetooth© 2.0/2.1/3.0, Plug and Play - Plug and play in Win8/8.1/10 systems Design - Nano design - Small, unobtrusive design allows you to plug it in and forget it is even there Reliabitlity - Versatile Wireless Connectivity - Enable wireless communication with Bluetooth-enabled computers, printers, phones, headsets, speakers, keyboards and more. BLE Technology - Bluetooth Low Energy technology for energy-saving wireless connectivity Physical Form Factor    USB 2.0 Nano Bluetooth 4.0 In The Box    Bluetooth 4.0 Nano USB Adapter UB400 Quick Installation Guide Width    14.8 mm Depth    6.8 mm Height    18.9 mm