Take a look at AoIP, AES67 and Dante. While they're IP and not USB, they are very much designed for extremely low latency for professional applications. https

Take a look at AoIP, AES67 and Dante. While they're IP and not USB, they are very much designed for extremely low latency for professional applications. https://github.com/bondagit/aes67-linux-daemon https://github.com/bondagit/aes67-linux-daemon