PLANET MGSW-28240F 24-Port 100/1000Base-X SFP plus 4-Port 10G SFP+, L2/L4 Managed Metro Ethernet Switch (AC+DC Power Redundant, 2xDI, 2xDO), Part# MGSW-28240F
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What is Metro Ethernet? | Juniper Networks US
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Gigabit placa metro Ethernet switch fibra 4*1.25G Fiber Port 3*100/1000M RJ45 Port SC Optic Fiber Switch PCBA Board Simplex 20KM - AliExpress
MSW-4204S-AD 2x 10G SFP+ and 4x Gigabit RJ45 EDD switch (Ethernet Demarcation Device) for Metro Ethernet networks w/ full 802.3ah OAM support (NID), SyncEthernet support, AC and DC power inputs