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TP-LINK TL-SM311LS Gigabit SFP module, Single-mode, MiniGBIC, LC interface, Up to 10km distance - TL-SM311LS SFP (mini-GBIC) Module introduced for extending transfer distance, attached to managed/web smart switches. It can extend the distance to several kilometers even tens of kilometers which can basically satisfy the distance requirement of LAN.View Product Specs
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