Move Gigabit Ethernet beyond copper distance limits while keeping the deployment simple. The Black Box LMC1012A media converter bridges 1000-Mbps copper to 1000-Mbps multimode fiber, using 850 nm optics and LC connectivity to support short-range fiber extension up to 0.3 km. This is the right tool when you need to connect switches, servers, or edge devices across a building segment, equipment room, or campus enclosure where multimode fiber is already in place. The fixed optical profile keeps the design focused: one copper side, one multimode fiber side, and a clear distance target. For infrastructure teams, that means fewer variables during rollout and fewer compromises when copper cannot meet the run length. For procurement, it is a targeted conversion device that fills a specific role in the network without overbuying features you will not use. Choose it when the job is to preserve Gigabit throughput across a short fiber span and keep the network architecture clean.