The industry-standard Cisco Small Form-factor Pluggable (SFP) Gigabit Interface Converter is a hot-swappable input/output device that plugs into a Gigabit Ethernet port or slot, linking the port with the network. The 1000BASE-SX SFP is compatible with the IEEE 802.3z 1000BASE-SX standard and operates on 50 micrometer multimode fiber links up to 550 m and on 62.5 micrometer FDDI-grade multimode fibers up to 220 m.