Make your Raspberry Pi or any computer Bluetooth 4.0 capable with this tiny USB module. It is also backward compatible with Bluetooth v2.1 so you can use it with older phones or accessories.
It is powered by a commonly used CSR8510 Bluetooth USB host chip. And since drivers for CSR Bluetooth modules are built into Windows XP/7/8/10 already, so you do not need to install any software or download anything. It works just fine with any modern computer as this chipset is very common. Each of this adapter have separate MAC address which allows you to use multiple of these at once. So you can even make beacons with these.For using it with a Raspberry Pi or a linux computer, follow this guide.