Backward compatible with Bluetooth 2.0, Bluetooth 2.1, Bluetooth 3.0 specification. Using CSR8510 chip, compliant with the Bluetooth 4.0
USB Bluetooth Adapter - Linux - Level1Techs Forums
Plugable USB Audio Adapter – Plugable Technologies
Bluetooth 5.0 Adapter Audio Receiver 2 in 1 USB Transmitter Digital Devices Wireless Transfer for Stereo Headphones Laptop Windows 10, 8.1, 8, 7, Raspberry Pi, Linux Compatible
USB Bluetooth Adapter - Linux - Level1Techs Forums
USB Bluetooth 4.0 Low Energy Micro Adapter for Raspberry Pi Linux Stereo Headset
Backward compatible with Bluetooth 2.0, Bluetooth 2.1, Bluetooth 3.0 specification. Using CSR8510 chip, compliant with the Bluetooth 4.0
USB Bluetooth 4.0 Low Energy Micro Adapter for Raspberry Pi Linux Stereo Headset
Bluetooth 4.0 USB Low Energy Micro Adapter Dongle Black for PC with 10/8.1/8/7 / Vista/XP, Raspberry Pi, Linux and Stereo Headset Compatible : : Electronics
Turn Your Raspberry Pi Into a Wireless Portable Bluetooth Audio System A2DP : 8 Steps - Instructables
Panda Wireless® Bluetooth 4.0 USB Nano Adapter - Windows XP/Vista/7/8/8.1/10/11, Mint, Ubuntu, Fedora, openSUSE, Lubuntu, Zorin, Kali Linux, Raspbrian Wheezy and OpenELEC
Bluetooth Adapter for PC USB Bluetooth Dongle 4.0 EDR Receiver TECHKEY – mytechkey