1) 1 upstream and 4 downstream USB ports included 2) Hot Plug & Play USB device 3) Half-transparent design with Blue LED for power 4) Status shows fashionable 5) Interface:USB2.0,compatible with USB1.1 6) Data transfer rate:1.5Mbps/12Mbps/up to 480Mbps 7) 4 separate port USB2.0 Expansion 8) Bus-power limit current protection:500mA