A critical component of this architecture—in both legacy versions like and modern versions like Mastercam 2022 —is the interaction between the software and the security dongle. This interaction relies heavily on a system component often referred to in technical logs and driver installations as the Virtual USB Bus .

introduced major interface overhauls and new 5-axis toolpaths, many legacy shops still rely on the stable foundations of X7. This virtual bus allows both to coexist without the need for constant physical dongle swapping.