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Amazon.com: TP-LINK Gigabit SFP module, 1000Base-SX Multi-mode Fiber Mini GBIC Module, Plug and Play, LC/UPC interface, Up to 550/220m distance (TL-SM311LM) : Electronics
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TP-LINK JetStream 16-Port Gigabit Smart Switch with 2 SFP Slots (TL-SG2218) - The source for WiFi products at best prices in Europe - wifi-stock.com
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