Ryan Berry suggested I try a very basic USB cable in place of the Wire World USB-Link cable I had bought from Schiit. I used the very basic 6' cable in the Codex box which had never been unwrapped. This solved the communication problem with the Innuos, and I was even able to go back to the low latency setting. He said using a USB upgrade cable is hit or miss.For those who have had some issues with USB communications, it might be worth a retry to go basic.A basic design feature of the Ayre USB DACs is the asynchronous Streamlength USB input.