TRENDnets 2-Pack 1000BASE-T RJ45 Copper SFP Module, model TEG-MGBRJ/2, converts a standard SFP port into a RJ45 gigabit port for additional copper connectivity. These SFP modules work with standard SFP ports commonly found in network switches and fiber media converters. Save on equipment costs by repurposing a switchs unused SFP ports for copper connectivity.