The GZM-100 series of Ethernet media converters with external power supply are 10/100Mbps auto-sensing and utilize fiber optics to extend the physical distance range of typical Ethernet links (100m) to 5km max. on MMF and 120Km max. on SMF. It designed to meet the Ethernet standards, especially for telecommunications, radio and television, high reliability data transmission or the formation of IP data transmission network area.