The Canon MF4700 Series (Fax) Windows driver is a software package that enables communication between your Canon MF4700 Series multifunction printer (MFP), which includes fax functionality, and your Windows computer. This driver is required for the printer to be recognized and to perform tasks such as printing, scanning, and faxing directly from your computer. It includes the necessary software for Canon's MF Toolbox and Canon's Fax Driver if you want to use the fax functionality directly from your PC.