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10/100mbps Ethernet To Fiber Optic Media Converter 25km Sc - Fiber Optic Equipment - AliExpress
1 Pair Fiber Optical Media Converter 1 Port SFP to 1 RJ45 with 1 Pair LC/SC SFP Module 3/5/20 KM Gigabit Optical Fiber Ethernet 10/100/1000M | Lazada PH
Gigabit Ethernet Single-mode LC Fiber Media Converter (SFP LX Transceiver Included), up to 20km, 10/100/1000Base-Tx to 1000Base-LX (a British Power Adapter included) : Amazon.co.uk: Computers & Accessories