mbeat® “STICK” 4-Port USB 3.0 Hub - Aluminium Portable 4 Port Data Transfer Super Speed USB Hub Adapter Ultrabook MacBook SurfaceBook Feature_ 4 x USB 3.0 ports for high speed data transfers Stylish and elegant aluminium finish Sleek, compact design for portability and durability For Macbook, Surface Pro Ultrabook Specs_ USB Port_ USB 3.0 Speed_ Up to 5Gbps Compatibility_ Backward compatible with USB 2.0 Material_ Aluminium + plastic design Support OS_ Windows XP / Vista / Win7 / Win8 / Win 8.1 or Mac OS 10.X and above Product Size_ 11.0 x 4.0 x 2.2 cm Product Weight_ 71g Package Size_ 12 x 16.2 x 2.5 cm Package Weight_ 121.5g Package Contents_ USB 3.0 hub