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UGREEN GROUP LIMITED via Amazon [amazon.com] has UGREEN Bluetooth 5.3 USB Adapter Dongle for PC on sale for $6.99. Shipping is free w/ Prime or on orders $35+.

Notes:[list][*]Windows 8.1/10/11 only — Windows 7, Linux, and macOS are not supported[*]If your PC has a built-in Bluetooth module, disable it in Device Manager before inserting this adapter[*]Functions as a receiver only — cannot be used as a transmitter