4. Write the following command in the terminal: sudo nvram bluetoothHostControllerSwitchBehavior = always
5. Restart your PC.
6. Pull out and insert the dongle back.
7. In the bluetooth settings, check that Broadcom has changed to Cambridge Silicon.
8. Open the list of Bluetooth devices. Select the device you want to connect. Click the Connect button.
If the devices still do not connect after following the instructions above, try the following: