A-szcxtop & trade;4 ports Black Color USB 2.0 High Speed Hub USB Hub Splitter Switch A new design, more avant-garde fashion. High speed 2.0 PORT HUB appearance design is very beautiful, beautiful and practical. This product volume small, easy to carry.USB extender extended for your computer out four USB interface, easy to carry. Every usb port with separate switch and lamp, light blue, very cool This product has seven epitaxial USB connection port, each output with a switch Operating system: Win95 osR2/98 se/Me / 2000 / XP/VISTA, Linux2.4 and Macos 8.5 above Transmission rate: 12 Mbps, 480 Mbps at full speed, medium speed, low speed of 1.5 Mbps Support overload current and the instantaneous electric current protection function.