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Plug and play installation User-friendly and ergonomic design Supports Windows 98, 98SE, 2000, ME, XP, Mac OS 9.x, 10.x. Over-current detection and protection USB :1.1 1,Fully compliant with USB 1.1 specifications, Backwardly compatible with USB 2.0 2, Supports up to 127 Full-speed or Low-speed devices 3, Supports data transfer rate at 1.5/12Mbps 4, Adds 5 USB 1.1 Full-speed ports .USB :2.0 1,Fully compliant with USB 2.0 specifications, Backwardly compatible with USB1.1 2, Supports up to 127 hi-speed devices 3, Supports data transfer rate at 1.5/12/480Mbps 4, Adds 4 USB 2.0 hi-speed ports.
usb hub