Features1. Adds 4 USB 2.0 Hi-Speed Ports. 2. Fully Compliant with USB 2.0 Specification. 3. Supports up to 127 Hi-Speed devices. 4. Backwards Compatible with USB1.1. 5. Support data transfer rate at 1.5/12/480 Mbps. 6. Individual Port Over-Current Protection. 7. Friendly & ergonomic design, easily portable. 8. Provide up to 500mA per port sufficient for diverse devices. 9. Plug & Play installation. 10. Support Windows 98, Windows 2000.Windows ME, Windows XP. 11. Support Mac OS 8.6 or above. 12. Hi-Speed Downstream ports with USB A Female connectors. 13. Hi-Speed Up stream port with Mini USB 5Pin Jack.

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