Industry Standard 1000Base-SX SFP Transceiver (MMF, 850nm, 550m, LC). An Industry Standard SFP transceiver that operates at 850nm over multi-mode fiber, with a maximum reach of 550m connected via a LC connector. This Industry Standard SFP transceiver is 100% compliant with its designed networking application. This SFP transceiver is built 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.