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: Gigabit SFP Networking Transceivers OPTONE,1000Base-SX 850nm MMF up to 0.5 km LC Compatible with Cisco GLC-SX-MM Ubiquiti UF-MM-1G, Mikrotik,Netgear,Edge-core and More(2Pack) : Electronics
Amazon.com: Mikrotik CRS328-24P-4S+RM 24 port Gigabit Ethernet router/switch with four 10Gbps SFP+ ports in 1U rackmount case, Dual Boot and PoE output, 500W : Electronics