Elgato Thunderbolt Drive + (256 GB) lightning-fast: transfer speeds up to 420 MB/s portable: bus-powered, no power supply needed versatile: Thunderbolt, USB 3.0 and USB 2.0 compatible reliable: no moving parts and server-grade Plextor SSD technology silent: fan-less design and inaudible Solid State Drive durable: dust and water protected metal enclosure