Setup instruction "Precaution When Using a USB Connection Disconnect the USB cable that connects the device and computer before installing the driver . Connect the USB cable after installing the driver . Driver and application software files have been compressed. The following instructions show you how to download the compressed files and decompress them. Download drivers , software, firmware and manuals for your Canon product and get access to online technical support resources and troubleshooting. Find support for Canon products, including drivers , software, manuals, and FAQs.