Capacity:64GB Our fourth generation of Secure Keys brings next generation security features, up to 25% cooler operating temperatures, and an even lower cost. Software-Free, 100% hardware-based 256-bit AES XTS encrypted, onboard keypad PIN authenticated, and ultra-fast USB 3.1 (3.0) data transfer speeds. All Data is encrypted on the fly and the device’s PINs and Data remain encrypted while the drive is at rest. Completely cross-platform compatible and OS agnostic; thrives in Windows, Linux, Mac, Android, Chrome, embedded systems, and equipment possessing a powered USB port and storage file system. All internal componentry is protected from physical tampering with a layer of hardened epoxy, and locked-down firmware brings immunity to malware attacks such as Bad USB.