Almost invisibly connected to the 4.0 Bluetooth drivers are installed automatically (Plug & Play) and then works perfectly and flawlessly. It offers the possibility via the coupling settings individual or to connect several Bluetooth devices. Also backward compatible Bluetooth technology as bsp. 3.0 is not a problem. Only when a new connection is established (eg when starting the PC) it takes 2-3 seconds. The stick also runs on Windows XP. The price is ok. My Recommendation!