The StoreJet 25H3 USB 3.0 portable hard drive combines the superior performance of USB 3.0, vast storage space, eye-catching enclosure, and a three-stage shock protection system that meets U.S. military drop-test standards. What else can you ask for?- Military-grade shock resistance.- SuperSpeed USB 3.0 compliant and backwards compatible with USB 2.0.- Advanced 3-stage shock protection system.- Durable anti-shock rubber outer case.- Advanced internal hard drive suspension system.- Quick Reconnect Button - re-enable safely removed USB hard drive without unplug and reinsert.- One Touch Auto-Backup button.- 256-bit AES file & folder encryption.- Exclusive Transcend Elite data management software.