This Bluetooth adapter will work on Windows without additional drivers, however to achieve the advantages of Bluetooth 5.3 you will need to install the drivers that are included with the adapter. Please hit us up on facebook if you have these drivers. The drivers that are on Windows only work at Bluetooth 2.0
If you are using this dongle on a device that already has bluetooth you may need to disable it first, as they don't coexist together. Read more here: Troubleshooting a Bluetooth Dongle: Tips to Resolve Common Issues
After a lot of time looking we are still unable to find any drivers for this device. If there is going to be any driver at all they would need to have been made by Actions the maker of the ATS2851, and even generic devices we have seen using this chip have no drivers on offer.
Important
Under the advanced tab of Windows Device manager look for the Firmware Version: It needs to be LMP 12.513 this is Bluetooth 5.3
For more information on What Bluetooth version you are running.
