LaCie Porsche Design USB 3.0 2TB External Mobile Hard Drive with Portable Hard Drive Case (Black) USB 3.0 interface for rapid photo, video and audio file exchange and transfer 3mm of strong aluminum casing to protect your data / LaCie Private-Public software to protect your data Time Machine compatible so that you can seamlessly backup to the drive using Mac's built-in software. Features eco-mode to lower your drives power consumption by up to 40% when not in use 2 TB storage capacity