05-15-2020, 04:07 PM
Which ports are causing trouble for your DAC the blue USB3 ports or the the black USB2 ports?
If it's the USB3 ports then it would suggest an incompatibility between DAC's USB chipset and Pi4 USB3.
If it's the USB3 ports then it would suggest an incompatibility between DAC's USB chipset and Pi4 USB3.