Black Box High-Density Media Converter System II Layer 2 Module - Fiber media converter - 10Base-T 1000Base-LX 100Base-TX 1000Base-T - RJ-45 / SC single mode - 1310 nmBlack Box Lgc5951c-r2 High-density Media Converter System Ii Layer 2 Module - Fiber Media Converter - 1 Gbps available on November 19 2015 from PCMall for 699.99