The FFUSB 4 in 13 driver portable can be particularly useful in various scenarios:
Do not trust random download sites. Instead, use Windows Device Manager:
The FFusb from Softing is a specialized interface card that connects a PC or laptop to a FOUNDATION Fieldbus (FF) H1 network . Fieldbus is a digital communication system used in industrial plants to connect and control smart sensors, actuators, and other field devices. The FFusb is a portable and non-intrusive tool for engineers.
Since the FFUSB portable driver may not be WHQL-signed: