Works perfectly with my XBox Elite Controller 2
I bought this dongle because of frequent disconnection problems with my Elite Controller 2 in bluetooth. Since I plugged in this adapter, I have no more disconnection problems.
I'm still a bit saddened that I had to pay extra, especially considering the base price of the controller, but this has nothing to do with the adapter. But anyway, it was obvious that the bluetooth input lag is not suitable for gaming devices.
In short, if you plan to use an XBox one or XBox series controller on a PC without using a cable, this adapter is a must.