ASUS USB-BT540 Bluetooth 5.4 Dongle Adapter (kompatibel mit Windows 11, 10, 8.1, Linux, für bis zu 7 Geräte, für PC und Laptop, Plug & Play, BLE)

You should buy this product now because at 6.99$, it is at the lowest price ever recorded. This is the best deal you'll find. The price is very likely to go up from here.