BluetoothBluetooth USB Adapter, 4.0 Bluetooth Low Energy 2.4Ghz Range Wireless USB Dongle Adapter for PC, Windows 10/8.1/8/7, Vista/XP Fully Content with Bluetooth 4.0 Specification with 24-bit CRC Verify & Adaptive Frequency Hopping(AFH) Enabled High Sensitivity CSR8510 A10 Controller Premium CSR Harmony Application included allow Microsoft Office and other Applications Access Bluetooth Connection Directly Simplified use with an attractive user interface. An included setup CD guides you through installation and connecting with Bluetooth-enabled devices in minutes. Latest Version 4.0 Class 2 Smart Ready Adapter with Low Energy Technology, backwards compatible with earlier Bluetooth versions1.0 ,2.0 and 2.1 . Gold Plated Bluetooth 4.0 Low Energy USB Adapter,E