10/100M Ethernet SingleMode Fiber Media Converters. ST-C series Fiber Media Converters can convert Optical-Electric Ethernet signals between 10/100M UTP interface (TX) and 100M optical fiber interface (FX). It can extend traditional 10/100M fast Ethernet to the distance of 120km through optical fiber link. It possesses stable performance and good quality by adopting latest IC packages USA and Taiwan. 6 Group LED indicated lights could fully monitor the working conditions of Converters. It is easy for end-users to observe network operation. ST-C series external power supply Converters could be used alone, or inserted to 14 slots Converters Rack suitable for the use of Network Centre. Main features . Auto negotiation function allows UTP port to auto 10M or 100M, and Full Duplex or Half Duplex. . UTP port supports MDI/MDI-X auto crossover. . Indicator function of link fault (LFP): When optical fiber or UTP is at fault, the converter could stop all the link. . Multiple Optical Transceiver could be chosen: SC, ST or FC, singlemode / multimode . Supporting 1600 bytes packet for management . Converter working mode could be chosen: Store and forward switch mode, Modified cut-through switch mode, or Converter mode. . Internal Circuit of prevented thunder could greatly reduce damage of the converter caused by thunderbolt induction. . Internal or External switching power: for users to choose. Technical Specifications . Operating standards:IEEE802.3u,10/100Base-TX and 100Base-FX; . MAC addresses table: 1K .Data buffer: Built-in 128Kbyte RAM . .Connectors: UTP Connector: RJ-45, 10/100Mbps; Fiber Connector: ST/SC/FC, 100Mbps .Cable: UTP: Cat. 5 (the max distance up to 100m) Fiber ( Singlemode): 8.3/125, 8.7/125, 9/125, 10/125um(the max distance up to 20 -120km) .Flow Control Full Duplex: Supporting standard IEEE802.3x Half Duplex: back pressure .LED: Power, FX SD, FX Link/Act, TX 100, TX FDX, TX Link/Act. .Power Requirement: AC 170 ~ 240V, DC 5V. .Ambient Temperature: 0 ~ 70'C .Humidity: 5 ~ 90%