Allows connecting at least 4 different USB devices It is tiny, compact, lightweight and fashionable Features: 4 USB 2.0 ports for easy expansion Supports a data transfer rate of up to 480Mbps 40 times faster than USB 1.1 products Guarantees 12Mbps bandwidth to each port for USB 1.1 devices Plug and play and hot swappable Backward compatible with USB 1.1 specifications Supports Windows 98, 98SE, 2000, ME, XP and Mac OS x or later version Over current protection LEDs allow for easy status monitoring A-B cable tucks away when not in use 3 year limited warranty Requirements: For PC users: Windows?98SE, 2000, ME and XP For MAC users: Mac 8.6 or greater Requires OS X for USB 2.0 support Specifications: USB specification: USB 1.1 and 2.0 compliant Cable length: 2.0 inch (5.0cm) Humidity: 20 to 80% RH (non condensing) Transfer rate: 480Mbps Power connections: DC adapter Operating temperature: 20 to 50°C Storage temperature: 0 to 70°C Operating systems: supports Windows?98SE, 2000, ME, XP, MAC OS 8.6 or greater Power consumption: 5.0V Ports: 4 downstream