WHITE 4 PORT USB MULTI HUB EXPANSION SPLITTER Adds 4 USB 2.0 hi-speed ports. The Laptop USB Hub fully compliant with USB 2.0 specification Backwards Compatible With USB 1.1 Support Windows 2000, ME, XP, VISTA, Win7 & Mac OS 8.6 or above Support data transfer rate at 1.5/12/480 Mbps