A USB20 TV Box is typically a USB device that connects to a television signal, such as digital TV or analog TV, allowing you to view television on your computer. The "USB20" part refers to the fact that it's a USB 2.0 device, meaning it uses the USB 2.0 standard for data transfer.
The Windows driver for this device is software that allows your computer to recognize and interact with the TV box properly. Without the correct driver, your computer may not be able to detect the device or use its functionality.