TP-Link MC112CS WDM Fast Ethernet Media Converter The MC112CS is a media converter designed to convert 100BASE-FX fiber to 100Base-TX copper media or vice versa. Adopting WDM technology MC112CS takes only one fiber cable to transmit and receive data which will save half cabling cost for you. Designed under IEEE 802.3u 10/100Base-TX and 100Base-FX standards the MC112CS is designed for use with single-mode fiber cable utilizing the SC-Type connector. The MC112CS supports longwave (LX) laser specification at a full wire speed forwarding rate. It works at 1310nm on transferring data and at 1550nm on receiving data. So the other end device to cooperate with the MC112CS should work at 1550nm on transferring data and at 1310nm on receiving data. Another TP-LINK's media converter MC111CS is just one of the examples to cooperate with MC112CS.Other features of this module include the ability to be used as a stand alone device (no chassis required) Auto MDI/MDI-X for TX port Auto negotiation of duplex mode on TX port and front panel status LEDs. The MC112CS will transmit at extended fiber optic distances utilizing single-mode fiber up to 20 kilometers. Features . Auto negotiation of 10/100Mbps and auto MDI/MDIX for TX port Provide switch configuration of Half-Duplex / Full-Duplex transfer mode for FX port Link Fault Passthrough and Far End Fault minimize the loss caused by link failure timely Adopts WDM technology transmitting and receiving data on one single fiber Extend fiber distance up to 20km Easy-to-view LED indicators provide status to monitor network activity easily External power supply. .