TRANSCEND HARD DISC 2tb Compact design and  portable weight  Compatible with  Ms. Windows 8/7/Vista/XP, Mac OS X, and Linux systems Strong shockproof rubber outer case  LED power/data transfer activity indicator  USB 3.0 and USB 2.0connection options Internal HDD suspension feature Transcend Elite data management software Single click Auto-Backup button Military-grade shockproof case.