RuiLing USB Micro Bluetooth CSR 4.0 Adapter Dongle Achieved with CSR8510-High Speed 3mbps Micro Wireless Receiver,Includes CSR Harmony CD Software.Compatible with Windows 8 / Windows 7 (32 and 64bit)/Me/ 2000 / 98 / Vista / XP For Laptop,Computer, Cell Phones,Stereo headphones ,speaker and other Bluetooth Enabled Devices . Latest Class 2 Bluetooth 4.0 Smart Ready Adapter, low energy, dual power. (Also Compatible with Bluetooth 1.0, 2.0 and 3.0) USB Bluetooth Dongle Offers High Speed Up To 3mbps Wireless Transmitter Enables Long Range Connectivity Up to 20m-30m Easy Solution for your Computer to Communicate With Bluetooth Enabled Devices Such As Cell Phones, headphones, Bluetooth Headsets, Bluetooth Speakers, Printers and More Compatible with 64 bit and 32 bit Windows 8 and Windows 7/Me/ Windows Vista / 2000 / XP. Fully Content with Bluetooth 4.0 Specification with 24-bit CRC Verify & Adaptive Frequency Hopping(AFH) Enabled High Sensitivity CSR8510 A10 Controller