This Bluetooth USB transmitter applies the latest Bluetooth 4.0 with low energy (BLE) technology with Enhanced Data Rate (EDR) support, backward compatible with classic Bluetooth (1.x, 2.x, and 3.x) devices. This USB Bluetooth dongle applies the advanced Bluetooth 4.0 technology with low energy protocol support and offers a cable-free solution for your computer to communicate with Bluetooth enabled devices with high-speed transfer rates of up to 3Mbps at 50ft away. Connect PC with Bluetooth Enabled Devices