Fibre Channel, or FC, is a high-speed network technology (commonly running at rates of 2, 4 and 8Gb/s) primarily used to connect computer data storage. Fibre Channel was primarily used in supercomputers, but has become a common connection type for storage area networks (SAN) in enterprise storage. Despite its name, Fibre Channel signalling can run on an electrical interface in addition to fibre-optic cables. SAN SFPs are compliant with Small Form Pluggable (SFP) Multi Source Agreement (MSA) mechanical and electrical specifications for LC Duplex transceivers.