Now make sharing and transferring files a piece of cake with this StoreJet 25M3 external hard disk from Transcend, and enjoy a hassle-free digital life. Shock-resistant This hard disk has an advanced 3-stage shock protection system, which makes it a durable device to have at your disposal. Superior Software This hard disk is loaded with Transcend Elite Backup and Security software to help you manage data easily, while also making it a safe affair. Furthermore, it comes with a one touch auto backup button to save files automatically. Compatibility Compatible with USB 3.0 and 2.0, this portable hard disk is quite a useful accessory. Operating Systems This device supports operating systems like Windows XP, Windows Vista, Windows 7, Linux Kernel v2.6.31 and Mac OS Xv10.5.