https://www.phidgets.com/docs/What_is_VINT%3F
VINT stands for Versatile Interface, and it's the system that all modern Phidgets use to communicate. Everything is backwards compatible and we still support all direct-to-USB Phidgets. A VINT Hub is a Phidget that has a number of VINT ports than can be used to connect to other Phidgets, or directly to switches, LEDs or sensors. The main advantages of VINT are versatility, modularity, connectivity and stability.
https://www.phidgets.com/
