The Western Digital 3TB My Passport Ultra External Hard Drive comes with the USB 3.0 interface that gets your large media files transferred quickly. This hard drive is preformatted for Windows systems while it needs reformatting to use with Mac OS systems. There are three user-friendly software provided with the hard drive. Of these, the WD Discovery can be used to import photos, videos, and documents from your social media account to the drive. The WD Security software prevents unauthorized access by letting you assign a 256-bit AES hardware encrypted password. Your valuable data is automatically backed-up in the drive at specified intervals thanks to the WD Backup software. The hard drive has a bus-powered operation.