Bluetooth v5.1 - low energy technology which gives you greater wireless range and faster connection to take calls anywhere. Bluetooth v5.1. Supported Bluetooth profiles. Requires Poly software to enable paring mode.
I purchased the Voyager 5200 without a BT dongle and connected it to my PC via Bluetooth, but I was struggling with poor call quality. Therefore, I bought this product separately and connected it, which improved the call quality.