Amazon.com: Mikrotik CRS310-1G-5S-4S+in 5 x SFP Ports 4 x SFP+ Ports and 1 x Gigabit Ethernet Port : Electronics
Amazon.com: 1.25G Single Mode SFP LC Module for Cisco GLC-LH-SMD, 1000Base-LX/LH Mini GBIC, Gigabit SFP, 1310nm SMF, up to 20km, for Cisco, Meraki,Ubiquiti UF-SM-1G,TP-Link TL-SM311LS and More, 2-Pack : Electronics
Amazon.com: Gigabit Multi-Mode LC Fiber to Ethernet Media Converter with A SFP SX Module, 1.25G Fiber to Copper RJ45 Media Converter, 1000Base-SX to 10/100/1000Base-TX, MMF, Transmission up to 550 meters/1804 ft :