Wd my book 6tb 35inch usb 30 desktop storage hard drive ultra fast transfer rates my book desktop storage is optimized for the best possible data transfer rates connect this drive to a superspeed usb 30 port to save and access files up to 3x faster than with usb 20 automatic backup software wd smartware pro automatic backup software works quietly in the background to help protect your data using minimal pc resources select automatic continuous backup to instantly create a second c