GageMux USB 4-Port4 Port GageMux USB Gage Interface Box This 4 port Universal Gage Interface Box is compatible with all SPC software data collection programs and has revolutionized data collection and storage. This compact gage interface allows users to connect hundreds of measuring devices and gages to an automated data collection system such as a computer or laptop computer into any SPC software data collection package. This 4 Port GageMux USB supports Four (4)