The ORICO BTA-402 Mini USB Bluetooth 4.0 Adapter Dongle for Smartphone Tablet Speaker directly plugs into USB 2.0 interface on PC， laptop， tablet， or speaker， with high transfer rate up to 3Mbps. It conforms to Bluetooth 4.0 standard and is downward compatible with Bluetooth 3.0， 2.1， and 2.0. With this brilliant little tool， you can now easily transfer files and audio signals to other devices. Even better， it supports dual-mode transmission， including transmitter and receiver， to provide full functionality. Mini size easily fits anywhere. Don’t hesitate to get one!                                    Features             Directly plug into USB 2.0 interface on PC， laptop， tablet， or speaker<br> CSR8510 chip， with high transfer rate up to 3Mbps<br> Conform to Bluetooth 4.0 standard and is downward compatible with Bluetooth 3.0， 2.1， and 2.0<br> Up to 20 meters of transmission distance<br> Let you easily transfer files and audio signals to other devices<br> Dual-mode transmission， including transmitter and receiver<br> Driver software: CSR Harmony Wireless Software Stack<br> Mini size easily fits anywhere <br>                                                            Specifications             Brand     ORICO    <br> Model     BTA-402    <br> Design     Professional    <br> Function     Bluetooth 4.0 Adapter Dongle    <br> Optional Color     Black    <br> Farthest Transmission Distance     20m    <br> Interface     USB2.0     <br> Transfer Rate     Up to 3Mbps    <br> Driver Software     CSR Harmony Wireless Software Stack    <br> Dimensions     (0.98 x 0.59 x 0.32)" / (2.5 x 1.5 x 0.5)cm (L x W x H)    <br> Weight     0.35oz / 10g       <br>                                                             Package Includes            1 x Bluetooth 4.0 Dongle， 1 x Driver CD<br>