D-LINK 100G5PSW: 4-port Gigabit Ethernet switch, PoE, 1x SFP at reichelt elektronik
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Amazon.com: Mini Industrial 4 Port 10/100/1000Mbps Gigabit Ethernet Switch with SFP Din Rail/Wall-Mount 10/100/1000BASE-T RJ45 + 1 100/1000FX (SFP) Support 12-48V DC 10Gbps Switching Capacity : Electronics
Amazon.com: 4-Port Outdoor Full Gigabit PoE+ DIN-Rail Fiber Network Switch 4 x Gigabit PoE+ Ports 2 x 1.25G SFP Fiber Ports 120W with 2pcs Industrial SFP Transceivers : Electronics