Product Features Using the second generation HUB USB controller,easily add 3 USB 2.0 ports,and 2-in-1 SD TF card reader,eliminate the hassle of constantly having to switch devices. 3 USB 2.0 Ports,power-bar design effectively saves space,compact,practival and convenient, built in overload short circuit protection device to protect your devices,supports hot swapping. Computer can automatically identify and install,don't need the driver,plug and play,enjoy data transfer rates of up to 5Gbps so you spend less time syncing(actual rate will depend on the capability of your device). All charging ports using special chip,Maximum 2.4A,provides high speed intelligent power charging for charging android phone/iphone/ipad etc.Which can support reading high-power devices such as hard disks. Compatible with all version Windows,MAC systems,support WIN XP/WIN 7/WIN 8/Win 10/Vista/Mac OS 9.0 or higher. Product Description Specifications: USB Interface: 2.0 Support USB1.0/1.1 Transmission speed 1.5/12/480MBPS USB Ports: USB 2.0 x 3 Size:51X40X40mm Weight:35g Support card:MS/Pro Duo, M2, SD/MMC, Micro SD. Support with all version Windows,MAC systems,support WIN XP/WIN 7/WIN 8/Win 10/Vista/Mac OS 10.0 or higher.