If you are facing a "No SIM Found" or "HASP Not Found" error while using a virtual link:

In Windows, the USB bus is the logical path through which data travels from a physical USB port to the system’s drivers. A Virtual USB Bus is a software-emulated controller that mimics physical USB connections. This is commonly used in virtual machines (VMware, VirtualBox, Hyper-V) or in driver-level emulation software.

: You must first run the specific .reg files that correspond to your Mastercam version to populate the license data in your system registry.

Always prioritize stability over emulation. A virtual bus link is only as reliable as the driver supporting it.