SIIG 4-Port SuperSpeed USB 3.0 Hub, model # JU-H40E12-S1 Type: USB Standards: USB 3.0 Ports: 4 x USB 3.0 Transfer Rate: Up to 5 Gbps Power Input: 100-240VAC ~ 50/60Hz, 0.6A Operating System Supported: Desktop or notebook PC or Mac with an available USB port (USB 3.0 recommended) Windows® 8 (32-/64-bit) / 7 (32-/64-bit) / Vista (32-/64-bit) / XP (32-/64-bit) / Server 2003 & 2008 (32-/64-bit) / Server 2008 R2 Mac OS® X v10.8 or later - See more at: http://www.siig.com/ usb-3-0-4-port-hub-1258.html#sthash.sWhDD9xf.sSmbmh6X.dpuf Dimensions: 7.53 x 3.46 x 1.97 Weight: 0.12 lb.
