Note: The black HUB, the shell material is plastic, so it is more affordable. About this item USB hub all-aluminum body. Craftsmanship, Rugged metal body protects against breakage and is more durable than plastic. Fast data transmission, 1 Port USB 3.0 Hub, 2 Port USB 2.0, transmission of data without waiting, fast and efficient. USB charger can charge four phones at the same time, USB Hub Extensions very powerful. Hub Extensions the multi-port expansion requirements of the device. Charging, USB flash drive, mouse, keyboard. Product introduction: Suitable for usb port computer and other devices, standard USB3.0 theory 5Gbps high-speed transmission, can actually SUB2.0 multi-port expansion, such as: mouse, keyboard connection, peripheral device connection, charging through the usb port to the mobile phone and other multi-port points line. Friendly Note: Maybe there are some colour differeence between pictures, if you mind, please do not place the order. Thanks Performance features: 1.USB3.0 * 1 theoretical speed 5Gbsp, standard USB3.0. 2.USB2.0 * 2 theoretical speed 480Mbps, standard USB2.0, to meet the needs of multi-port expansion.