100Mbps 1000Mbps Rj45 To Sfp Media Converter Modular Design NF-C2200-SFP
Fast Media Converter SFP Transceiver Module 5KM 100Mbps Fast Ethernet RJ45 to Fiber Switch 2 Port SC Single Mode|ethernet media converter|optical ethernetmedia converter - AliExpress
MFB-F60 Single Mode, 100Mbps SFP Fiber Transceiver - 60KM - Planet Technology USA