Just wanted to let people know that I bought this Adapter off Amazon (for $20.99) and it works great:
Long Range Bluetooth 5.3 Adapter for PC USB High Gain 5dBi 100m/492ft Antenna for Desktop Laptop Bluetooth Dongle for Mouse, Keyboard,Speakers,Supports Windows 11/10/8.1,Plug and Play
It setup really easily and I connected an aranet4 to it and everything is working as expected.
Some people were asking if there were any Bluetooth 5.3 adapters, so I thought I’d mention that this one worked for me in case others ask in the future.
Edit: Sometimes the above link is sold out on Amazon now that everyone has been buying them out.
You can search for them online elsewhere.
From what I can tell, I think the model number may have been EP-B3552 so these may be alternative links to get it: