This hub has 4 USB3.0 ports, and its transmission speed can reach to 5Gbps.It is made from aluminium alloy material. The appearance looks exquisite and the speed of heat dissipation is fast.The hub can connect to 5V/1A or 5V/2A power adapters with a 3.5mm interface.Item Name: USB3.0 HubMaterial: Aluminium AlloyTransmission Rate: 5GbpsConnecting Interface: USB3.0 x 4Compatible System: for Windows, for Mac OS, for Linux SystemFeatures: Portable, High-speed Data Transfer, 4 PortsWire Length: 30cm/11.81& 39;& 39; (Approx.)Hub Size: 9.3cm x 3.54cm x 2.25cm/3.54& 39;& 39; x 1.18& 39;& 39; x 0.79& 39;& 39; (Approx.)Notes:Due to the light and screen setting difference, the item& 39;s color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x USB3.0 Hub (Hub Only, Others Not Included)