TRENDnet's TFC-1000 series Fiber Media Converter transforms 1000BaseT (Copper Gigabit) media to 1000BaseSX/LX (Fiber Gigabit) media and vice versa. The 1000BaseT port supports full-duplex Gigabit connection at wire speed with RJ45 connector. The fiber Gigabit connection supports shortwave (SX) or longwave (LX) laser optic with multi-mode or single-mode SC type connector. This converter will give your Copper Gigabit connection the ability to interface with fiber connection over a distance up to 20 km. With the optional 16-slot EIA-48,3 cm ( 19 inch ) rack-mount chassis, the TFC series converters are the perfect solutions for various fiber media.TFC-1000MSC is a 1000BaseT to 1000BaseSX Multi-Mode Fiber Converter with SC Connector.