8 (2x8) Coaxial Matrix. The SMP4028 matrix is designed for applications that require matrix switching in a shielded coaxial environment. This card provides the ability to connect any input to any output. The SMP4028 is configured with 2x8 building blocks that can easily be expanded. For example a single module can be expanded into a 2x64 matrix, a 16x8, or any number of other intermediate configurations. The front panel contains high-density coaxial connectors designed for high reliability and superior signal integrity. The high density, modular architecture of the SMIP II ™ family provides the basis for extremely flexible and easily reconfigurable matrix switch systems.