Character: 1. USB2.0 interface,transfer rate up to 480Mbps,Backwardly Compatible with USB 1.1 ; 2. Adds 5 USB 2.0 Hi-speed ports,1 ESATA port ,and 1 SATA port 3. USB host power supply,the peak current/port is 500MA 4. Supports full speed and low speed data transfer 5. Supports hot plug-and-play 6. Each USB port is a separate LED that lets you view more convenient working conditions of each port conveniently 7. Supports up to 127 USB devices 8. Brilliant,small and exquisite shape.Color LED instructions, is the icing on the cake 9. Supports Win98/ME/2000/XP/Vista ,Linux Mac OS 9.X or above Interface: USB2.0(Backwardly Compatible with USB 1.1) Ports: 1 upstream port with Minni USB,5 downstream ports with USB A connectors Transfer rate: 480Mbps/USB2.0, backwards Compatible 12Mbps/ USB 1.1 Chipset:GL850A Suitable for U disk,Camera,Reader, USB mouse, USB keyboard,Scanner, Digital camera, Digital camera, Printers, ESATA and SATA devices, Display, Input devices and so on Shell material: Environmental PC Power supply: USB host power supply, plus 5V/3.5A power switch-mode power supply Operatingg system:Windows Vista/XP/2000/ME,Windows98seMAC OS