Features: Fully compliant with USB 3.0, expand 4 USB ports. Power consumption, low operating temperature so solts and slots without interfere with each other. Allows simultaneous operation of up to 4 separate devices all attached to a single USB port. Supports for Windows Vista/ XP/7\8\10\for MAC 9.1\ ABOVE\10.0 and so on. for USB mouse,keyboard,U Disk,USB SD TF card reader and more USB devices. Plug and for Play, hot swapping supported, no additional driver or application needed. Built in over voltage, over current, leakage and short-circuit for protection units protect your devices safe at any for time. Premium ergonomics: Ultra-compact, easy to carry and durable. Support USB 3.0 super speed transmission. USB Hub only, other accessories demo in the picture is not included Specifications: Material: Plastic Size: app.16x9x2.5cm/6.30x3.54x0.98in Color: Black Quantity: 1 Pc Note: Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package Includes: 1 x USB Hub