... OS, Linux, Windows Vista(Attention: you may need Win98 disk if your computer runs under Win 98/SE operation system ... between 45°radius )FunctionPage Up/Page DownLaser pointerBuilt-in flash memory is optional(No memory 2G/4G/8G)The transmitter ... , Me, 2000, XP, Mac OS, Linux, Windows VistaUSB versionUSB1.1 , Compatible with USB2.0Working voltage4.5VDimension52x28x9mmSafety measuresl To avoid possible ...