FCI is a licensed second source to Amphenol TCS (ATCS). The connectors are intermatable, electrically and mechanically interchangeable. Product types are available in 2, 3, 4 and 6 pair vertical headers for backplane application and in 4 and 6 pair right angle receptacles for daughter card application. A variety of power and guide options are also available for compatible backplane and daughter card monoblock assemblies.