This is a media converter that converts a 1000Base-SX(SC) to 1000Base-LX(SC), providing the conversion from 850nm to 1310nm wavelengths, while extending distance reach between 550m to 40km. Our media converters are 100% compliant for all of our networking needs. Now you have a cost effective solution to your network upgrade needs. AddOn 1000Base-SX(SC) to 1000Base-LX(SC) MMF/SMF 850nm/1310nm 550m/40km Media Converter is one of many Networking Transceivers & Converters available through Office Depot. Made by AddOn.