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Amazon.com: 10GBase-LR SFP+ Singlemode Transceiver, 10G SFP 1310nm 10km&20km DDM Duplex LC SM Module, Compatible with Arista SFP-10G-LR : Electronics
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10Gtek 10GBase-LR SFP+ Transceiver, 10G 1310nm SMF, up to 10 km, Compatible with Cisco SFP-10G-LR, Meraki MA-SFP-10GB-LR, Ubiquiti UniFi UF-SM-10G, Mikrotik, Fortinet, Netgear and More - Newegg.com
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Cisco SFP-10G-LR-40 Comp. SFP+ 10GbE DDM - SFP Modules | Networking IO Products | StarTech.com Europe
Proline Cisco SFP-10G-LR Compatible SFP+ TAA Compliant Transceiver - SFP+ transceiver module - 10GbE - SFP-10G-LR-PRO - Transceiver Modules - CDW.com
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