This is another adapter that has no drivers to make it function at Bluetooth 5.3 instead Windows installs a Microsoft driver from a decade ago that only allows Bluetooth 2.0. Get a refund, because Actions Semiconductors the company that makes the chip are not going to develop a driver anytime soon.
The EDUP EP-B3531 Bluetooth 5.3 USB Adapter offers advanced Bluetooth connectivity, supporting Bluetooth 5.3 for faster data transmission and extended range. Its USB interface ensures easy compatibility with various devices, enhancing wireless connections for laptops or desktops with seamless connectivity to peripherals. Compact and versatile, it remains a valuable tool for enabling modern Bluetooth functionalities and facilitating effortless wireless connections between devices.