USB 3.0 connectivity delivers maximum performance for transferring files to and from this drive. WD Elements portable storage comes with a trial version of WD SmartWare Pro backup software, which allows you to back up your files to your WD Elements drive or to the cloud using your DropBox™ account. When your internal hard drive is almost full your PC slows down. Don't delete files. Free up space on your internal hard drive by transferring files to your WD Elements portable storage and get your laptop moving again.