Keep legacy Fast Ethernet devices connected when the network path changes from copper to fiber. The Black Box LHC029A-R4 media converter translates 10/100-Mbps copper traffic to 100-Mbps simple connectivity, making it a practical fit for edge segments that still depend on Fast Ethernet performance. Use it to extend service to remote closets, industrial endpoints, and older switches that do not justify a full refresh. By preserving existing copper devices while bridging to fiber, it helps reduce disruption, protect prior investment, and maintain stable connectivity where a direct Ethernet handoff is not available. This class of converter is often chosen when the requirement is straightforward: keep traffic moving, keep the topology simple, and avoid overbuilding the edge. For teams managing mixed-generation infrastructure, that balance matters. It supports a cleaner migration path without forcing a wholesale replacement of devices that still perform their job well.