Features:Compact and portable sizeThe USB 3.0 aluminum Hub creates a natural extension for your computerIt can save the time of transfer files with a speedy data transfer rate (the data transfer rate: up to 5Gbps， much faster than USB 2.0)It is compatible with USB 2.0 and USB 1.1 No drivers required for Windows 8 / 7 / Vista / XP or Mac OS X 10.2 and above. Built-in surge protection keeps your devices and data safe. And it supports plug and play. Specification:Color: SilverSize: 15.1 x 5.3 x 2.5cmPackage Weight: 4.7 oz/134gData transfer rate: 1.5 Mbps / 12Mbps / 480Mbps， can reach up to 5GbpsCompatible Modes:Windows XP / Vista / 7/ 8， Mac OS 9.1 and above， or Linux.Mac OS X Lion 10.7.4 users should upgrade to Mountain Lion 10.8.2 or later to avoid unstable connections. Note:To ensure a stable connection， don't use this Hub with high power consumption devices (those exceed a rated current of 0.9 A among all ports)， such as some large-capacity hard drives. You need an external AC charger if you want to use it for high power consumption devicesThis Hub is can’t be used as a stand-alone charger. And， it is not compatible with iPad or any other device has an irregular requirement of battery charging2.4 GHz wireless devices (keyboards， mice， etc.) can’t work for USB 3.0 ports. And try using a USB 2.0 connection to replace it What is included:1 x USB 3.0 Aluminum Hub