Chipset:850 &©|8226;4 USB 2.0 Ports &©|8226;Transfer Rate: 480/12/1.5 Mbps &©|8226;Compliant with USB 2.0/1.1 &©|8226;Hot Plug &Play. &©|8226;Fully compliant with the Universal Serial Bus Specification version 1.1/2.0,full speed up to 480Mbps &©|8226;Single chip integrated USB hub controller with embedded proprietary processor. &©|8226;Support four bus-powered USB hub contrloller with embedded proprietary processor. &©|8226;Support four bus-powered downstream ports. &©|8226;Provide up to 500mA current to each port which is sufficient for diverse devices. &©|8226;Supports: Windows 98SE/ME/2000/XP, Linux 2.4 & MAC OS 8.5 or up |