This category includes fiber optic connectors designed for optical communication and data transmission. Excludes ESD mats, soldering mats, mat kits, survey kits, and other non-fiber optic connector products such as circular connectors, rectangular connectors, card edge connectors, terminal blocks, board-to-board connectors, crimp and solder terminals/splices, backplane connectors, FFC/FPC connectors, D-sub connectors, and photovoltaic (solar panel) connectors.