Amazon.com: OLYCOM Gigabit Switch 4 Ports Industrial Ethernet Converter DIN-Rail IP40 Rated Network Switch with Mini Size for Security Camera : Electronics
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Amazon.com: Hardened Industrial Gigabit Compact Ethernet Switch 10-Port 10/100/1000BASE-T RJ45 with auto-MDI/MDI-X Function 10/100Mbps Half/Full Duplex and 1000Mbps Full Duplex 12~48VDC Wide Range Power Input : Electronics