Question: Does Bluetooth Output use the Audio output from the DAC Hat?

[Wheel_nut]

Pi 1B (ARM6) needs a different USB setting and you will find that in the System configuration tab...  
Once you change it you will find all your USB devices will work.

DRONE7, Thank you for that. It seems to have fixed the problem with the USB flakiness on the RPi 1B. It now seems to be working with the 4-Port Hub and the Bluetooth adapter plugged into the Hub.

If you mean the Max USB current setting it was removed a few releases back because according to the Pi dev's RaspiOS always runs the arm6 USB at max current. https://www.raspberrypi.org/documentatio...sb_current

Tim, I don't think that the problem was with exceeding the current limit on the USB Ports because when I am using the USB Hub on the RPi 1B, I power the Pi by backfeeding from the Powered 4-Port Hub. I did this to avoid blowing the Polyfuse on the MicroUSB Power input socket.

Perhaps he was thinking about the udisks-glue vs devmon choice for the USB auto-mounter?

My personal choice would be to ditch the Pi-1B even if it works and use a Pi-3A+ instead. Inexpensive and better equipped.

Regards,
Kent

Kent, Yes that is exactly the setting that I changed and the info below it specifically tells me to do it for a RPi 1B.  

... and Yes, I am going to get another RPi 3B

I now have another problem ... Since turning off the on-board BT device and re-booting, I cannot access the GUI!

Time for a cup of Tea and a re-think!

Thanks to all, Robin