5-connector, based on the proven 1. 25 mm ferrule technology, is the only standardized small form factor connector combining high packing density, reliability, high performance and safety due to its automatic metal shutter. Patch fields with high packing densities do not only require a. connector. Made in both die-cast and industry compliant thermoplastics, the MPO adapter is precision manufactured to insure intermateability with industry standard assemblies and. LX. 5 fiber optic patch cables use the 1. By allowing two fibers instead of one to fit into the standard SC adapter footprint, the LX. It offers the advantage of E-2000™.