Keep copper and fiber segments aligned with a media converter designed for dependable Gigabit transport over single-mode fiber. The Black Box LGC122A-R4 converts 10/100/1000Base-T copper to 1000 LX fiber using 1310 nm optics and SC connectivity, making it a practical fit for extending network reach between closets, buildings, and remote equipment locations. For infrastructure teams, the value is in preserving existing Ethernet investment while moving traffic onto fiber where distance, isolation, or EMI concerns make copper impractical. LX single-mode operation supports long-distance links with the signal integrity expected in enterprise environments, while the 10/100/1000 Ethernet side keeps compatibility broad across mixed-speed access and aggregation gear. Choose this model when the link matters more than the box. It is built for deployments where a simple converter is preferable to a full switch upgrade, especially when you need a clean handoff between copper access ports and single-mode backbone fiber. The result is a focused, purpose-built conversion point that helps maintain uptime, simplify migration, and extend service without overbuilding the network.