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Amazon.com: Tripp Lite Network Copper RJ45 Ethernet to Fiber SC Duplex Multimode Cable Extender Converter, 1310nm Wavelength, Power Over Ethernet+, Gigabit, Extend 1.2 Miles / 2 Km, 2-Year Warranty (N785-001-SC) : Electronics
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TC Comm Products Lets You Turn Ethernet, RS-232 or Fiber Optic Circuit into a Voice Network - TC Communications
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