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8-Port USB 2.0 to RS-232 DB-9 Industrial Serial Adapter w/ FTDI Chipset & 15kV ESD Surge Protection - Coolgear
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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,
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