Built with a durable anti-shock rubber case, 500 Gb USB 3.0 External Hard Drive from Samsung combines a 500 GB storage capacity with a USB 3.0 interface, 256-bit AES file encryption, and military-grade shock resistance. The internal 2.5" hard drive receives further protection from a suspension system, while a one-touch auto-backup button helps to create a second copy of your data and a quick reconnect button re-enables the removed hard drive without needing to remove and reinsert the USB cable. Power is provided via the USB bus, and compatible operating systems include Windows, Mac, and Linux. Easily store and access 500 GB of content on the go. USB external hard drive. Designed to work with Windows or Mac computers, this external hard drive makes backup a snap just drag and drop. To get set up, connect the portable hard drive to a computer for automatic recognition no software required. This USB drive provides plug and play simplicity with the included 18 inch USB 3.0 cable. Interface Speed: 5.0 Gbps (USB 3.0) / 480 Mbps (USB 3.0).