Push Gigabit Ethernet farther without changing the network architecture. StarTech’s ET91000SM20 converts copper to single-mode fiber and extends a 10/100/1000 Mbps connection up to 20 km, making it a practical fit for campus links, remote closets, and building-to-building runs. The LC-based single-mode design is built for long-distance transport where copper cannot reach and where consistent signal delivery matters more than low-cost shortcuts. It gives infrastructure teams a clean way to connect distant switches, edge devices, and aggregation points while keeping the path simple and predictable. For environments that need a dependable media conversion layer, this model is a strong choice when the job calls for more than basic short-range bridging. TAA compliance also makes it suitable for procurement paths that require sourcing alignment for public sector and regulated deployments. Use it when you need to preserve Gigabit performance across fiber without introducing unnecessary complexity. The result is a compact conversion point that helps extend network design options while staying focused on the one task that matters: moving traffic reliably over distance.