The VIA VT83C572/VT82C586 PCI to USB Universal Host Controller is a device driver for a specific set of VIA Technologies USB host controllers. These controllers allow your computer to communicate with USB devices (such as keyboards, mice, printers, and more) through the PCI (Peripheral Component Interconnect) bus. The VIA VT83C572 and VT82C586 chips are older models that provide USB functionality in older computers or motherboards.

In modern computers, USB functionality is typically handled by more recent USB host controllers, but if you're working with older hardware, you may encounter this driver when trying to set up USB ports on older systems.