Features:
Chipset: GL850A
Add 4 USB 2.0 Hi-speed ports
Fully Compliant with USB 2.0 Specification
Support up to 127 Hi-speed devices
Backwardly Compatible with USB 1.1

Support data transfer rate at 1.5/12/480 Mbps
Individual Port Over-Current Protection
Easily portable
Color: Silvery white

Provide up to 500mA per port which is sufficient for diverse devices
Power from USB port
Power Adapter included
Plug & Play
1 Hi-speed mini port used to connect with PC USB port with USB cable

OS Support
Windows 98/ME/2000/XP
MAC OS 8.5 or above
Linux 2.4 or above.