Extend Fast Ethernet connectivity where copper alone cannot reach. The Black Box LMC400A converts 10/100/1,000-Mbps copper Ethernet to 100-Mbps fiber, giving network teams a straightforward way to bridge legacy Fast Ethernet segments into fiber-backed runs. This converter is well suited for environments that need dependable point-to-point extension without replacing existing switching infrastructure. It helps preserve service to remote closets, industrial edges, and distributed devices while keeping the network path simple. By translating copper Ethernet to fiber, it supports longer-distance links and cleaner separation between network segments. For teams managing mixed-speed environments, the LMC400A provides a practical transition path. It can sit at the edge of a network to connect copper-based equipment into a fiber transport layer, reducing the need for costly rip-and-replace upgrades. The result is a focused, purpose-built converter that supports uptime, reach, and compatibility in one compact device.