$341 off TRENDnet Dual Wavelength SC Fiber Converter

TRENDnet Intelligent 100Base-TX to 100Base-FX Dual Wavelength Single Mode SC Fiber Converter (TFC-110S40D3i)

The TFC-110S40D3i intelligent fiber converter works with the TFC-1600 chassis system or as a standalone unit. This converter is a Dual Wavelength Single Mode SC-Type fiber converter that spans distances up to 40km (24.9 miles). This module must be used with the TFC-110S40D5i module. Ports include 1 x 10/100Base-TX (RJ-45) port and 1 x 100Base-FX (SC Simplex Type) port.