SFP ( Small Form-factor Pluggable ) is a compact transceiver used for telecommunication applications.
Signal transmitting rate of these modules range from 155Mbps up to 4Gbps or more,
working distance can be from 0,5 to 240 km.
An improved version of SFP standard called SFP+ can support transmission rates up to 10Gbps.
Available for copper (RJ-45) and for all common fiber modes, wavelengths and data rates, SFPs allow
users to connect different interface types to the same network equipment, via an SFP port.
More and more network equipment is being designed with SFP ports, to take advantage of this flexibility.