Black Box establishes a lot of connections. The company distributes and supports voice and data networking infrastructure. Its offerings include modems, routers, switches, and testing equipment, as well as cabinets, cables, and training materials. Black Box primarily distributes third-party equipment, some of which carries the Black Box brand, but it also manufactures select products. In addition, the company maintains technical support hotlines and provides services such as on-site design, installation, and maintenance. Black Box sells its products to corporations, schools, and government agencies worldwide, but the majority of its revenue is generated in North America.