Keep legacy Ethernet segments in service while moving traffic onto fiber where distance and isolation matter. The Black Box LHC211A converts 10/100 Mbps copper Ethernet to 100 Mbps multimode fiber, giving network teams a practical path for extending links beyond copper limits and reducing exposure to electrical interference. This media converter is a strong fit for environments where a small number of copper endpoints still need to connect into a fiber backbone. It helps preserve existing switches, controllers, and attached devices while supporting a cleaner transition to fiber infrastructure. That makes it useful in industrial spaces, campus closets, and distributed network edges where replacing every endpoint is not the right spend. For infrastructure teams, the value is in targeted conversion: keep the device, change the medium. That approach reduces disruption, protects prior hardware investment, and supports more reliable transport over multimode fiber. When a link needs to cross distance or separate from EMI-heavy equipment, this converter provides a focused, purpose-built answer.