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Amazon.com: TRENDnet USB to Serial 9-Pin Converter Cable, Connect a RS-232 Serial Device to a USB 2.0 Port, Supports Windows & Mac, USB 1.1, USB 2.0, USB 3.0, 21 Inch Cable Length,
StarTech.com 1 Port RS232 Serial to IP Ethernet Converter / Device Server - NETRS2321P - Console & Device Servers - CDW.com
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