Proteus VSM USB simulation represents the worlds first (and only) schematic based USB Simulation engine. Proteus interfaces with Windows on a driver level, so that it is as if your design were actually plugged into the computer's USB port.
The Advanced Simulation Option can be added to all Proteus PCB Design and Proteus VSM products including the Starter Kits. It extends the functionality of the basic simulator to provide a full range of graph-based analyses.