Transcend 1TB Slim StoreJet 2.5 Inch M3S Shock Resistant Portable HDD One plus one is greater than two. The StoreJet 25M3 combines the shock-resistant qualities with the SuperSpeed 5Gb/s interface bandwidth of USB 3.1 Gen 1, allowing users to enjoy ultra-fast file transfers and the highest level of anti-shock protection. - Military-grade shock resistance - SuperSpeed USB 3.1 Gen 1 compliant - Advanced three-stage shock protection system - Durable anti-shock rubber outer case - Advanced internal hard drive suspension system - Slim form factor for greater convenience and portability (SJ25M3G / SJ25M3S) - Quick Reconnect Button - safely re-enable the removed hard drive without unplugging and reinsertion - One Touch Auto-Backup button - 256-bit AES file & folder encryption - Exclusive Transcend Elite data management software