1,single fiber singlemode media converter. 2,Port:RJ45 connecotor to STP/UTP.sc/st/fc connector to fiber port. 3,long distance:our distance of media converter can up to 120KM. 4,IEEE802.3 10Base-T Ethernet,IEEE802.3u,100Base-TX/FX Fast Ethernet, IEEE802.3x Flow control,IEEE802.1q VLAN,IEEE802.1p QoS,IEEE802.1d Spanning Tree 5,good quality and competitive price.