BT851 Bluetooth 4.2 Dual-Mode USB Adapter provides a compact, pre-certified solution offering Classic Bluetooth and Bluetooth Low Energy (BLE). The BT851 USB Adapter plugs into any Windows, Android, or Linux device via an external USB connection. Based on the Cypress CYW20704 A2 chipset, the BT850 Bluetooth USB Adapter provides exceptionally low power consumption with outstanding range.