Forget about using it with Win 7, even with the right drivers. Win 7 finds the device and finds the BT headphones I wanted to use but immediately decides the headphones aren't connected fast enough and it did the same with the second pair. The same headphones worked perfectly with two other computers and a smartphone. If you can live with BT 4 and not BT 5 instead, I would suggest a TP-Link adapter. It's only BT 4 but it worked really fast and I didn't have any problems with it with my headphones.
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