... wake up if any key is pressed.I. Operation SystemWindows 98,Se,Me,2000,XP,Vista, Mac OS, LinuxIII. ... Alt+Tab function: To switch the window when open several windows. Built-in flash memory is optional VI. Operating Hintsl ... Class III) (optional)Dimension125×51×47 mmWeight-without batteries55gReceiverInterfaceUSBOperation systemWindows 98/Se, Me, 2000, XP, Vista,Mac OS, LinuxCompatible plugUSB1 ...