1) Chipset: GL850 2) Adds 4 USB2.0 Hi-Speed Ports 3) Fully compliant with USB2.0 Specification 4) Supports up to 127 devices 5) Supported data transfer rate at 1.5 / 12 / 480Mbps 6) Provides up to 500ma per port 7) Power adapter available 8) Supports Windows 98 / 2000 / ME / XP and OS8.6 or above 9) Accessories: case + power