FORE Systems was a computer network switching equipment company based in Pittsburgh, Pennsylvania. Founded in 1990 to supply Asynchronous Transfer Mode (ATM) cards for workstation computers, it soon branched out to become a major supplier in the ATM switch market and the extended those product lines to add Internet Protocol switching and other devices. FORE was purchased by the British General Electric Company (GEC) in 1999, just before the dot-com bubble, which eventually drove GEC to reform the company as Marconi. Ericsson purchased most of Marconi in 2006.