Keep long-distance Ethernet links stable where copper reaches its limit. The StarTech MCM1110SMLC20 converts 10/100/1000 Mbps copper to Gigabit single-mode LC fiber, giving infrastructure teams a straightforward way to span up to 20 km without introducing a switch at every endpoint. Built for dependable transport, it supports 1000BASE-T and 1000BASE-LX operation, full- and half-duplex modes, 9K jumbo frames, auto-negotiation, and auto MDI/MDI-X. A DIP switch enables Link Fault Passthrough with LLCF/LLR, helping isolate failures faster and reduce time spent tracing broken links across remote closets, campus buildings, or industrial spaces. The all-metal chassis is compact enough for tight rack-adjacent installs, while LED indicators provide immediate status visibility. A 5V DC power adapter is included for consistent operation, and TAA compliance makes it suitable for procurement environments with sourcing requirements. For teams that need a simple, durable copper-to-fiber handoff, this model delivers the reach and control expected in higher-value network deployments.