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Amazon.com: MOXA NPort 5650-8-DT-J 8-Port Serial Device Server, 10/100 Ethernet, RS-232/422/485. Connector, RJ-45 8pin Jack connectors, i15KV ESD, 12-48VDC, 110V Power Supply : Electronics
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Amazon.com: MOXA NPort 5110-1 Port Serial Device Server, 10/100 Ethernet, RS232, DB9 Male : Electronics
Amazon.com: MOXA NPort 5450-4 Ports Device Server, 10/100 Ethernet, RS-232/422/485, DB-9, 15KV ESD, WITHOUT 110V Power Adapter : Electronics
Amazon.com: MOXA NPort IA-5150 1-Port RS-232/422/485 Serial IA Device Server, 10/100 Ethernet (RJ45) : Electronics