Stewart Connector is a designer and manufacturer of modular jacks and plugs for the telecommunications, data processing, medical and automotive industries. It offers more than 2,000 modular connector products. It is a part of Bel Fuse, which manufactures and sells a line of electronic products, such as direct current converters, transformers, connector modules, fuses and delay lines. Bel Fuse has achieved ISO 9000 certification. The company sells its products through a network of distributors. Bel Fuse also offers ring generators, hybrid circuits and common mode chokes. It provides products under the Homeplug and MagJack brands. The company employs more than 5,000 people. Stewart Connector pioneered the development of shielded multiport jack systems that eliminate EMI/RFI noise while improving high-speed transmissions.