Review on 🔌 Enhance PC Connectivity with Bluetooth USB Adapter: Wireless Bluetooth 4.0 Receiver for Keyboard, Mouse, Headset & Skype Call Support - Compatible with Windows, Linux, Vista XP by Matt Dyen

This is a very cool bluetooth USB adapter that WORKS on Ubuntu Linux, 18.04.2 LTS. I received this adapter and expected to spend quite a bit of time trying to get it to work or prove that it doesn't work on my Linux machine. But it turns out it only took me a few minutes to set up before I could start listening to music/watching videos online with Bluetooth headphones. The sound quality is very good, crisp and clear. No delay at all. For those of you trying to use it on Linux, just open Settings/Bluetooth on your system and let the system find an available device, then connect. Highly recommended.