Edge-corE® ET4201-SX Compatible 1000Base-SX SFP Transceiver (MMF, 850nm, 550m, LC). A 100% Edge-corE® SFP transceiver that operates at 850nm over multi-mode fiber, with a maximum reach of 550m connected via a LC connector. This Edge-corE® compatible SFP transceiver has been programmed, uniquely serialized, and data-traffic and application tested to ensure it is 100% compliant and functional. Our SFP transceiver will initialize and perform identically to Edge-corE's transceiver and is built to meet or exceed Edge-corE's specifications, and comply with MSA (Multi-Source Agreement) standards. The actual part shipped may have a different part number, but will be functionally identical and 100% compatible. Trade Agreements Act (TAA) versions of this part are available.