Plastic Backshells for D-Subminiature Connectors TE Connectivity's (TE) Plastic Backshells for D-Subminiature Connectors are compact, lightweight backshells designed for 9- to 37-position standard density D-subminiature connectors. These backshells feature a hinged design and come complete with jackscrews, making them quick and easy to assemble. TE Plastic Backshells are available in a variety of cable sizes and are an ideal solution for D-subminiature connectors used in unshielded applications.