TP-Link UB400 - Connecting the Adapter to Your Computer

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devices in Device Manager, then insert the adapter and
try again.
Q2. Why the adapter is not working with my Bluetooth
device?
A1. Make sure your device has BLUETOOTH function.
A2. For devices with non-standard Bluetooth protocols,
such as Logitech Mouse and Airpods, there may be
some compatibility problems.
If you still have questions and need further help, refer to
https://www.tp-link.com/faq-2316.html