Top features:- 4 TB of storage space to store more files- USB connectivity for fast data transfer- Windows and Mac compatible for versatilitySimple to store more The Western Digital Elements External Hard Drive has a huge 4 TB of storage space, which allows you to save vast amounts of data, whether it's music, video or photos. USB connectivity Featuring USB 3.0 connectivity, data transfer is ultra-fast and you can copy your files across with the minimum of fuss. Backwards compatible, the Elements HD can also be used with USB 2.0 ports, so no matter where you use your hard drive, you'll be able to access your information with ease. Windows and Mac Compatible with Windows 7 and later, this WD Elements Hard Drive can also be re-formatted for Mac use, making it a versatile and convenient storage medium regardless of your preferred operating system.