Features:  The newest chipset version: VL812 allows this hub perform stable and perfectly compatible with your Windows， Mac OS or Linux systems.  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  Chipset: VL812  USB Ports: 4  USB type: USB 3.0  Compliant with USB version: USB 1.1 / 2.0 / 3.0  Compatible Systems: Windows 2000/ XP/ Vista/ 7/ Linux/ Mac OS 10. X or above  USB 3.0 cable length: Approx. 54cm / 21.3in  USB hub size: Approx. 6.8 * 5.2 * 1.1cm / 2.7 * 2 * 0.4in  USB hub weight: 34g / 1.2oz  Package size: 18.5 * 14.5 * 6.8cm / 7.3 * 5.7 * 2.7in  Package weight: 122g / 4.3oz  Note: Power adapter is NOT INCLUDED in the package.  Package included:  1 * USB 3.0 Hub  1 * USB 3.0 Cable  1 * USB Power Cable