The Transcend StoreJet 25H3 is a portable external hard drive with a 4 TB capacity, designed to keep your large collections of files safe and accessible. It connects via a USB 3.1 Gen 1 interface, allowing you to move data at speeds up to 5Gbps using the included micro USB to USB Type-A cable. To protect your data from accidental drops, the drive features a three-stage shock protection system consisting of a reinforced hard casing, an internal suspension damper, and a purple silicone rubber shell. This rugged build meets the MIL-STD-810G 516.6 US military transit drop test standard, and the USB connector is durable enough to withstand 10,000 plug-unplug cycles. Managing your files is simplified with a one-touch auto-backup button and AES encryption for added security, both of which work through the Transcend Elite software available for Windows, macOS, and Android. If you ever lose data, the RecoveRx utility helps with recovery on Mac and Windows systems. Weighing 298 g and measuring 131.8 mm x 80.8 mm x 24.5 mm, this 5400 RPM drive is compact enough for daily travel, making it a reliable choice for users who need high-capacity storage that can survive the bumps of a commute.