G-Technology G-DRIVE with Thunderbolt High-Performance Storage Solution 3TB (Thunderbolt, USB 3.0) (0G03124) Thunderbolt and USB 3.0 ports for ultimate high-speed data transfer Integrated heat-sink for quiet operation and cooling Solid all-aluminum case makes for durability and stylish looks 3TB storage capacity handles digital video, music and photo files Formatted for Mac and easily reformatted for Windows Limited 3-year warranty Thunderbolt and USB 3.0 ports for ultimate high-speed data transfer Integrated heat-sink for quiet operation and cooling Solid all-aluminum case makes for durability and stylish looks 4TB storage capacity handles digital video, music and photo files Formatted for Mac and easily reformatted for Windows Limited 3-year warranty