StarTech Mini USB Bluetooth 4.0 Adapter Promises Bluetooth Class 1 but Can Only Go Up to 50 Meters
Most computers only support Bluetooth Class 2 which is rated to only go up to 10 meters. If you need to reach longer distances, you can use the StarTech Mini USB Bluetooth 4.0 Adapter - 50m (165ft) Class 1 EDR Wireless Dongle.
This StarTech dongle claims Bluetooth Class 1 which should theoretically reach 100 meters but clearly states only a 50 meters range.
The StarTech Mini USB Bluetooth 4.0 Adapter - 50m (165ft) Class 1 EDR Wireless Dongle comes with a CD which you need to install on Windows. If you are using a Mac, there should already be an inbox driver on the Mac OS that supports this dongle so you shouldn't need to install another driver.