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LM YN DB9 RS232 COM Male Port to RJ45 Female Connector Card DB9 Serial Port Extender to LAN CAT5 CAT6 RJ45 Network Ethernet Cable Adapter
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Tripp Lite B165-101 Serial over Cat5/Cat6 RS232 Extender Transmitter and Receiver Up to 3280 Feet (1000m)
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