Koutech 13-Port Hi-Speed USB 2.0 External Hub USB Specification v.1.0/1.1/2.0 compatible (data transfer rate at 1.5/12/480 Mbps) Thirteen (13) Hi-Speed USB 2.0 downstream ports and one (1) Hi-Speed USB 2.0 upstream port USB supports up to 127 devices in peer-to-peer configuration and hi-Speed USB 2.0 is fully compatible with original USB systems, peripherals, and cables Fully Plug-N-Play compatible Supports Windows 98SE/Me/2000/XP/Server 2003/Vista/Server 2008/Windows 7/Windows 8, Linux, Mac OS 8.6 and higher