Specifications Model Number:  US216/30768 Computer Connections:  2 x USB 3.0 A ports Device Connections:  4 x USB 3.0 A ports Data Transfer Speed:  Up to 5Gbps Power Port:  Micro USB, 5V Power Supply:  Requires an external 5V/2A power adapter (not included) for full functionality Case Material:  ABS Compatibility:  Windows XP/7/8/10/Vista, MAC OS 8.6 and above Dimensions:  105mm x 53mm x 16mm or approximately 4.09 x 2.01 x 0.59 inches Weight:  Approximately 150g or 5.3 ounces Included Accessories:  Two 5ft/1.5m USB cables Switching:  Manual button push to switch between computers

Read more less