Hello ! I was listening long time with my nucleus (Roon) connected with my McIntosh D1100 DAC via USB. As I tested a new USB cable I had two USB cables connected on my Nucleus, so that I can easily change. Everthing worked fine. After I removed one of the cables from the nucleus (only on left), he doesn’t find my McIntosh D1100. I removed all the cables again.Shut down the Nucleus. Disconnected him from power. After rebooting the Nucleus, still doesn’t find and work. The USB connection on the DAC is fine (tested it with my laptop) !