When running Avanti, a USB port must be assigned to the virtual host to support the Avanti license key.  See the Avanti Release Notes for current information on technologies supporting USB key migration in multi-hosted virtual environments.

When configuring a USB device to support the Avanti license dongle in a VM instance, avoid enabling USB 3.0 support.  Set the port up for USB 1.1 and USB 2.0 support only.