Let’s be realistic. The is legacy technology. If you are still using a Bluetooth 2.0 or 2.1 dongle in 2025, you are missing out on:
Power saving features can sometimes turn off your Bluetooth module unexpectedly. btbu1 driver
(frequently packaged as generic filter drivers) Intel Wireless Bluetooth integrations Let’s be realistic
Intel Bluetooth Driver for Windows 10 (Version 22H2 or later) btbu1 driver