Transcend's StoreJet 25M3 is a portable external hard drive. It provides super-fast data transfer with the speed of 5GB per second. With a built-in capacity of 2TB and file encryption system you can create an external backup of your personal computers internal drive and save other things too. It is designed with anti-shock casing that keeps the drive and your data safe from damages. It does not require formatting for different operating systems, it is compatible with Windows, Mac and Linux.