Keep legacy copper devices connected when the run moves beyond twisted-pair limits. Black Box FLEXPT MEDCONV 101000BT 1kB converts 10/100Base-TX Ethernet to 100BaseLX over single-mode fiber, giving network teams a practical way to extend access-layer connectivity without replacing endpoint hardware. The SM/SC optical path is suited to structured cabling environments where fiber distance and electrical isolation are required. That makes it a strong fit for building interconnects, remote closets, industrial edges, and other installations where copper would be too short or too exposed to interference. This converter is designed for straightforward deployment in mixed-media networks. It preserves Ethernet connectivity while moving the transport medium to fiber, helping reduce signal degradation and opening up longer reach options for existing infrastructure. For teams standardizing on Black Box connectivity hardware, it offers a focused, purpose-built component rather than a general-purpose compromise.