Harmonica shape, Silver color2in. hide-away cableBlue Activity LEDData transfer speeds up to 480 MbpsFour downstream ports support high speed (480Mbps), full-speed (12 Mbps), and low-speed (1.5 Mbps)Supports up to 127 devices by daisy-chaining multiple hubsMaximum of 500mA per USB PortReverse compatible with USB 1.1Driver-less installationSome power-intense USB devices may require a AC-Powered USB Hub (See Model USB-HWPS)