Specifications‎:‎USB power supply mode and DC power supply mode‎.‎USB3.0 ultra‎-high speed transmission rate‎,‎ transfer rate up to 5Gbps per second‎.‎Backward compatible with USB2.0‎,‎ USB1.1‎.‎Hubs and each peripheral device support plug and play and hot plug functions‎.‎4‎-port each overcurrent detection and protection design‎.‎Built‎-in LED indicator shows the USB power supply‎,‎ DC power supply‎,‎ USB peripheral device connection status of each USB port in‎.‎No need to install any drivers‎.‎Compatible with Windows 7/Vista/XP and other operating systems‎.‎Type‎:‎ Expansion HubTransfer Rate‎:‎ 5GbpsConnection Interface‎:‎ USB 3.0 x 4Compatible Systems‎:‎ for Windows 7/Vista/XPFeatures‎:‎ Plug and Play‎,‎ Easy to UseUSB Cable Length‎:‎ 30cm/11.8‎"‎ ‎(‎Approx‎.‎‎)‎