This Fast Ethernet Fibre Optic Converter means that you can convert & extend your Fast Ethernet network by up to 2km using fibre optic cable. The fibre optic signal is totally immune to electromagnetic & radio frequency interference, & is electrically isolated. The ideal solution for high speed inter-connections up to 200 Mbps (Full-duplex) between buildings & floors. Package Contents LC Media Converter Multi Country PSU 5V 2.5 Amp User Manual