... wake up if any key is pressed.I. Operation SystemWindows 98,Se,Me,2000,XP,Vista, Mac OS, LinuxIII. ... make sure that the Positive (+) and Negative (-) ends of each battery match the polarity indicators inside the battery housing.l Push ... Class III) (optional)Dimension125×51×47 mmWeight-without batteries55gReceiverInterfaceUSBOperation systemWindows 98/Se, Me, 2000, XP, Vista,Mac OS, LinuxCompatible ...