... wake up if any key is pressed.I. Operation SystemWindows 98,Se,Me,2000,XP,Vista, Mac OS, LinuxIII. ... +Tab function: To switch the window when open several windows. Built-in flash memory is optional VI. Operating Hintsl ... mmWeight-without batteries55gReceiverInterfaceUSBOperation systemWindows 98/Se, Me, 2000, XP, Vista,Mac OS, LinuxCompatible plugUSB1.1, compatible USB2.0Working voltageUSB electricity ...