SanDisk Extreme 510 Portable SSD 480GB SDSSDEXTW-480G-G25 High-speed, portable storage for huge data, photos, videos and more Durable, all-terrain and water-resistant design is ready to go wherever you go High-performance transfer with up to 430MB/s read speeds SanDisk SecureAccess software encrypts private files.The SanDisk Extreme 510 Portable SSD requires only a small amount of power through the USB 3.0 portno need to carry additional power cords. 480GB of storage that fits in the palm of your hand