Hard Drives are excellent for storing large amounts of data, while also being portable, albeit not as portable as pen drives. The increased capacity as compared to any pen drive is a vastly acceptable trade off as you can store many more files and folders in it. Capacity and Connectivity The Seagate Backup Plus hard drive comes with a whopping One TB??of free space. Most would consider this as a virtually unlimited supply of free space as it can hold thousands of songs and hundreds of movie files. The Seagate Drive is USB 3.0 compatible, allowing for high transfer rates. Salient Features The Seagate Backup Plus External Hard Disk allows for increased Transfer Speeds due to its upgraded Thunderbolt Technology also known as the FireWire 800. You can easily protect your data with Flexible Backups and save photos automatically. A single click is all it takes to share your favorite photos and videos on social networking sites. Supported OS and Portability The Seagate Hard Drive is compatible with Windows XP and above, as well as Mac OS X v10.6. The hard drive is very portable due to its compatibility with a wide range of OS versions and this will allow you to easily transfer data between compatible machines.