SFP Multi Mode
This hot-pluggable transceiver is capable of transmission at 2 to 550 meters with 50/125 μm fiber, and at 2 to 275 meters with 62.5 125 μm fiber, for 1.25 GBd Ethernet. It is capable of transmission up to 500m with 50/125 μm fiber and up to 300m with 62.5/125 μm fiber, for 1.0625 GBd Fiber Channel.
SFP Single Mode
This hot-pluggable transceiver is capable of implementing both Single Mode (SM) and Multimode (MM) optical fiber applications in that order of precedence in the event of conflicting specifications. In addition, the SM link type exceeds the 2 m to 5 km 1000BASE-LX specification by achieving compliance over 2 m to 10 km.