ADD-GMC-SFP is a Media Converter that converts 10/100/1000Base-TX to 1000Base-X (SX,BX, LX) via an Open SFP Slot. ADD-GMC-SFP provides a cost effective conversion from 1000Base Copper to SFP fiber, while extending your network reach beyond the 100m reach limitation of copper. ADD-GMC-SFP supports single mode dual fiber, multi-mode dual fiber and single-mode in single fiber. AddOn - Network Upgrade Media Converters and Network Interface Cards are 100% compliant for all of our networking needs.