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SFP-5030-31 - Fast Ethernet OC3 or STM-1 single-mode SFP transceiver, 1310nm, max range 30Km, dual LC connector
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Amazon.com: 1.25G Single Mode SFP LC Module, 1000Base-LX/LH Fiber Transceiver for Cisco GLC-LH-SMD, Meraki, Ubiquit UniFi, TP-Link, Fortinet, Intel, Netgear, Mikrotik and More (SMF,1310nm,20km,DDM) 2 Pack : Electronics
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