Description TP-Link Product Page: SM311LS The SM311 series Fiber Module Cards are introduced for extending transfer distance, attached to our managed/web smart switches. They can extend the distance to several kilometers even tens of kilometers which can basically satisfy the distance requirement of LAN. Users can choose whether and which items to use the fiber modules according to the demand in order to lower cost. * Single-mode MiniGBIC module.* Works with: SG3109/3216/3224, SL3428/3452, SG2109WEB/2216WEB/2224WEB, SL2210WEB/2218WEB/2428WEB/2452WEB, SL1351. Standards and Protocols IEEE 802.3z, CSMA/CD, TCP/IP Cable Single-mode Fiber Fiber Type 9/125 um Single-mode Max. Cable Length 10km Data Rate 1.25Gbps Port Type LC Wave Length 1310nm Power Support 3.3V Safety & Emission FCC, CE Environment Operating Temperature: 0C~70C (32F~158F) Storage Temperature: -40C~80C (-40F~176F) Operating Humidity: 10%~90% non-condensing Storage Humidity: 5%~90% non-condensing