Features: ?Compatible with your Windows， Mac OS or Linux systems.?1 upstream and 4 downstream USB port.?4-port USB 3.0 hub with super speed transfer rate up to 5Gbps.?Backwards compatible with USB 2.0 & 1.1.?Supports hot swap.?Built-in over-current protection to protect both connected devices and the hub itself from unforeseen power surges.?Plug and Play， no driver needed.?Light weight， small size， easy to carry. Specifications: ?Color: Black?Material: ABS?USB Ports: 4?USB type: USB 3.0 Compliant with USB version: ?USB1.0: 1.5Mbps (Low-Speed).?USB1.1: 12Mbps (Full-Speed).?USB2.0: 480Mbps (High-Speed).?USB3.0: 5Gbps (Super-Speed).?Compatible Systems: Windows 2000/ XP/ Vista/ 7/ Linux/ Mac OS 10. X or above Package includes: ?1 x 4Port USB 3.0 Ports Hub with On/Off Switch ?1 x USB 3.0 Cable?1 x AC Power Adapter