I think my internal RP3 bluetooth unit is a bit slow for my liking, so I wonder if I could attach a higher quality bluetooth dongle to one of the USB Ports and make it work instead of the internal one? I am on bluetooth-audio service, and I need to know how to make this happen using balenacloud dashboard! Thanks in advance! 
Hi,
Do you have a specific dongle in mind or available to test? I think it should work to just plug it in and use the new BT device in your code instead of the internal one.