StoreJet 25M3 Transcend's StoreJet 25M3 ruggedized external hard drive combines supreme shock-resistant qualities with the USB 3.1 Gen 1 interface, allowing for ultra-fast file transfers and the highest level of anti-shock protection. The StoreJet 25M3 features a three-stage shock protection system that meets US military drop-test standards to fully protect data stored on the drive. The three-stage shock protection system includes a silicone rubber case, an internal shock-absorbing suspension damper, and a reinforced hard casing. Transcend’s external hard drives are built to the highest standards and rigorously tested, offering outstanding quality, performance, and reliability. Transcend products both look after your data and complement your good taste.