[. . . ] The GoFlexTM ultra-portable drive makes it easy to store, automatically and continuous backup and encrypt all your files with its preloaded software and plug-and-play USB 2. 0 connectivity. [. . . ] Use the standard USB 2. 0 interface or upgrade to USB 3. 0, FireWire® 800 or powered eSATA by pairing the drive with the appropriate GoFlex upgrade cable. With the included NTFS driver for Mac®, you can now interchangeably store and access files from PC and Mac computers without reformatting. The NTFS driver is simply installed once on your Mac computer, allowing it to access and store files in a PC compatible format*. * Reformatting to HFS+ required to use backup software for Mac or Time Machine® software Extend your content beyond the PC. The GoFlex ultra-portable drive is the heart of the GoFlex Storage System, and by combining it with other GoFlex Storage System products you can enjoy your content on your TV, access files from any PC or Mac computer on your network, from a mobile device or via the internet while on-the-go. In addition, some of the listed capacity is used for formatting and other functions and will not be available for data storage. The export or re-export of hardware or software containing encryption may be regulated by the U. S. Department of Commerce, Bureau of Industry and Security (for more information, visit www. bis. doc. gov). Actual data rates may vary depending on operating environment and other factors. [. . . ] Actual data rates may vary depending on operating environment and other factors. [. . . ]