The industry-standard Cisco Small Form-Factor Pluggable (SFP) Gigabit Interface Converter (Figure 1) links your switches and routers to the network. The hot-swappable input/output device plugs into a Gigabit Ethernet port or slot. Optical and copper models can be used on a wide variety of Cisco products and intermixed in combinations of 1000BASE-T. 1000BASE-SX. 1000BASE-LX/LH. 1000BASE-EX. 1000BASE-ZX. or 1000BASE-BX10-D/U on a port-by-port basis.
