Keep critical Ethernet links alive across distances copper cannot reach. The StarTech ET1000S40LC2 converts 1000BaseT to 1000BaseLX/SX over single-mode fiber, extending a Gigabit network up to 40 km. That makes it a practical fit for campus backbones, remote buildings, industrial sites, and other deployments where long cable runs must stay stable and predictable. This converter operates transparently, so it fits into the network without changing how endpoints communicate. Use it to bridge copper equipment to fiber infrastructure while preserving Gigabit throughput across the link. The LC-based optical interface is designed for clean integration into single-mode environments, and the TAA designation supports procurement requirements for government and regulated buyers. For teams that need a straightforward way to move Ethernet farther without redesigning the network, this model delivers the reach and compatibility that lower-cost short-range converters cannot match. It is built for the kind of infrastructure decision where uptime, distance, and compliance all matter at once.