1x CSR 4.0 Bluetooth Drive Dongle. Operation system: Windows 98, Windows NT, Windows 2000, Windows XP, Windows Vista, Windows 7, Windows 8, 10. Connect your PC or laptop etc to speakers, headphones, or other Bluetooth devices.
eBay
This Integral USB Bluetooth 2.0 Adapter is the perfect solution for adding wireless connectivity to your PC. With its Bluetooth v2.0 standard, it provides fast and reliable wireless connection to your devices. Its USB 2.0 port allows for easy plug-and-play installation, and it comes in a sleek black color that will blend seamlessly with your setup. This adapter is designed to fit PCs and offers wireless and Bluetooth connectivity. It is an ideal choice for home networking and connectivity. With its high-speed data transfer, you can enjoy seamless connectivity and experience wireless freedom.
eBay
The Bluetooth USB adapter adds Bluetooth connectivity to your PC, enabling wireless communication with a wide variety of Bluetooth devices. The adapter is drastically smaller than other USB adapters and can be left in the USB port of your computer.
eBay
I have various Bluetooth 5.0 USB dongles that I purchased thinking they were different versions of Bluetooth. As such these are sold as new.
eBay
Support protocols: HFP/HSP (hands-free phone/headset) A2DP/ AVRCP (stereo music) HID/HOGP (keyboard and mouse) /ACC. Android smart phone, etc. Blutooth 5.4 adapter. Win8.1/10/11 driver-free, plug and play, Win 7 need to install drivers.
eBay
BLUETOOTH WIRELESS USB DONGLE. Upgraded Bluetooth 5.4/5.3+BLE (LMP:12.45). Backward-compatibility with Bluetooth versions such as 5.2/5.1/5.0/4.0/3.0/2.0. Connect once manually, and connect automatically thereafter.
eBay
.
eBay
USB Bluetooth 5.1 Mini Wireless Dongle Adapter. USB Bluetooth 5.1 Mini Adapter : Applies the latest Bluetooth 5.1 adapter, Bluetooth low energy. The anti-interference ability has been increased. New technologies have been adopted to reduce the loss of transmission efficiency caused by interference in the 2.4 GHz band.
eBay