A USB Scanner Windows driver is software that allows your Windows computer to communicate with and control a scanner that connects via a USB port. Scanners, such as flatbed or document scanners, require drivers to interpret and manage the image or data being scanned, enabling you to use the scanner with software like image-editing programs, document management software, or simply for scanning into files.

The driver is necessary because the scanner itself typically does not contain the software required to interface directly with your operating system. Without the appropriate driver, your computer won't recognize the scanner, and you won't be able to perform scanning functions.