4 High-Speed USB 2.0 Ports-With Transfer Rate up to 480 Mbps Fully Compatible with PC & MAC USB 2.0 or 1.1 Peripheral Products Support Plug & Play and Hot Swapping Automatically Connect with Speed Detection Specifications 4 High-Speed USB 2.0 Ports-With Transfer Rate up to 480 Mbps Fully Compatible with PC & MAC USB 2.0 or 1.1 Peripheral Products Support Plug & Play and Hot Swapping Automatically Connect with Speed Detection System requirements Windows® 98/SE/ME/2000/2003/XP, Vista or Mac OS 9x & 10x USB port