The Transcend StoreJet 25H3B is a portable external hard drive designed to keep your data safe while you are on the move. It utilizes a 2.5-inch HDD and is available in capacities of 1 TB, 2 TB, or 4 TB, connecting to your devices via a USB 3.1 Gen 1 interface using a micro USB to USB Type A connector. To protect your files from accidental drops, it features a three-stage shock protection system consisting of a silicone rubber case, an internal suspension damper, and a reinforced hard shell, which together meet the MIL-STD-810G US military transit drop test standard. This drive is available in a stylish Grey/Blue color and is built for reliability, weighing 191 g for the 1 TB and 2 TB versions, while the 4 TB model is slightly heavier at 298 g and thicker at 24.5 mm. For managing your data, you can use the one-touch auto-backup button or secure your information with AES encryption and a disk lock. It works seamlessly with Microsoft Windows 7 or later and macOS 10.10 or later, and you can further manage your files using the Transcend Elite software on Windows, Mac, or Android, or recover lost data with RecoveRx.