This Media Converter will transform a signal from the standard 100BASE-FX Fast Ethernet on Multi-mode to an optical cable to a signal of the standard 100BASE-FX Fast Ethernet on Single-mode to an optical cable. The maximal length of an optical cable: 15 km. Supports 2 optical ports (SC-connector).

The socket with designation Link1 is intended for connection Multi-mode an optical cable, a socket with designation Link 2 - Single-mode  cables.