10/100M fast Ethernet media converter that are independently developed and manufactured by my company's new high-speed Ethernet optical network transport products. It can be achieved in two different twisted pair and fiber optic transmission media conversion, relay 10/100Base-TX and 100Base-FX in two different network segments. Can meet the long-distance, high-speed, high bandwidth Fast Ethernet workgroup users. Can be realized as far as 120 km without repeater remote high-speed computer data network interconnection. Product performance is stable and reliable, in line with the Ethernet design standards, and has anti-lightning protective measures. Especially suitable for telecommunications, broadcasting, railways, military, financial, securities, customs, civil aviation, shipping, electricity, water, and oil and various broadband data networks and require high reliability, data transmission, or the formation of IP data transmission network of field professionals. Is the campus broadband network, broadcasting network and intelligent broadband residential broadband fiber-to-floor fiber to the home of the best applications.