... switch and volume adjusting switchMulti-media System Power amplifierStereoAudioInter-magneticPower-supplySystemInput voltageAC110V/50HzTemperatureWorking ... allow)480mm×380mm×190mm Software(optional)Operating systemWindows2000,WindowsXP,Win7,Red Hat LinuxApplication ... bookstores, parks, exhibition halls, museums, convention centers;Real Estate Property: Apartments, commercial buildings, property brokers ...