It divides into USB 1.1 and USB 2.0.
USB HUB1.1:
Adds 4 USB 1.1Hi-Speed ports
USB HUB2.0:
Adds 4 USB 2.0 Hi-Speed ports

Fully Compliant with USB 2.0 Specification Supports up to 127 Hi-Speed devices
Backwards Compatible with USB 1.1
Support data transfer rate at 1.5/12/480Mbps Individual Port Over-Current Portection
Friendly & ergonomic design, easily potable Provide up to 500mA per port sufficient for diverse devices
Power Adapter included
Plug & play installation
Support Window98, windows2000, windows ME, windows xp
Support Mac OS 8.6 or above
Hi-Speed Down stream ports with USB A Female connectors
Hi-Speed Up stream ports with Mini USB 5P Jack