This is is a Harris/ M/A-Com dual-control head cable. I believe it works with M7100 radios, but please verify your application before purchasing. The cable was sold to me as working, but I never used it. Note in a picture that the cable jacket has been pulled back slightly from one of the DB connector strain reliefs. I believe the cut wires in the cable to be from the factory, as not very many pins are used in this cable assembly, and there is no sign of cutting.