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Amazon.com: A Pair of 10G SFP+ Bidi Transceiver, LC Single-Mode Single Fiber Module, 10GBASE-BIDI 1270nm/1330nm for Cisco SFP-10G-BX20D-I/SFP-10G-BX20U-I, Ubiquiti UniFi, Mikrotik, and More, DOM, up to 20 km : Electronics
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Amazon.com: 5 Pairs BIDI SFP Network Transceiver Module, 1.25 Gigabit Single Mode LC 1000BASE-LX Single Fiber Interface SFP 20km : Electronics
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