StoreJet 25H3 (USB 3.0) 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? Key Features Military-grade shock resistance* Fully Compliant with the Hi-Speed USB 2.0 specification 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 *Based on U.S. military drop-test standards MIL-STD-810G 516.6. Transcend is not responsible for recovering any data lost due to any improper usage. **Transcend Elite software is required to use this feature. Specifications Size 500GB/1TB: 131.8mm×80.8mm×19.0mm (5.27″ x 3.23″ x 0.76″) 2TB: 131.8mm×80.8mm×24.5mm (5.27″ x 3.23″ x 0.98″) Op. Voltage USB DC 5V Op. Temperature 5°C (41°F)~55°C (131°F) Storage Media 2.5″ SATA HDD Weight 500GB/1TB: 216g (7.61oz) 2TB: 284g (10.01 oz) Certificates CE, FCC, BSMI, RCM Connection Interface USB 2.0/3.0 Power Saving Mode 10 mins One Touch Backup Yes System Requirements Desktop or notebook computer with a working USB 2.0 or USB 3.0 port Operating Systems (OS): Microsoft Windows XP Microsoft Windows Vista Microsoft Windows 7 Microsoft Windows 8 Microsoft Windows 8.1 Mac OS 10.5 or later Linux Kernel 2.6.31 or later