The LaCie d2 USB 3.0 Thunderbolt™ Series is the perfect solution for heavy data users who require universal compatibility. With USB 3.0 and Thunderbolt™ ports, it’s the must-have sidekick to a new Mac® or Ultrabook™. Since USB 3.0 is backwards compatible, the LaCie d2 can also connect to any standard computer on the planet via USB 2.0. It also features a heat-dissipating aluminum casing and AES 256-bit software encryption for protection from unauthorized access.