The Cisco Small Form-Factor Pluggable (SFP) Gigabit Interface Converter connects your switches and routers to the network. The hot-swap-enabled input/output device is connected to a Gigabit Ethernet port or slot. Optical and copper models can be used with a variety of Cisco products and can be combined port for port in combinations of 1000BASE-T, 1000BASE-SX, 1000BASE-LX/LH, 1000BASE-EX, 1000BASE-ZX or 1000BASE-BX10-D/U.