3ft USB to Serial Cable/RS232 Adapter - Serial Cards & Adapters | StarTech.com
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Amazon.com: Plugable USB to Serial Adapter Compatible with Windows, Mac, Linux (RS-232DB9 DTE Male Connector, Prolific PL2303HX Rev. D Chipset) : Electronics
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USB 2.0 RS-232 Serial Adapter with LED Indicators
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Amazon.co.jp: USB/Serial Adapter : パソコン・周辺機器
USB to RS-232 Adapter (35cm) - UC232A, ATEN Converters | ATEN Corporate Headquarters
StarTech.com 1 Port USB to Serial RS232 Adapter - Prolific PL-2303 - USB to DB9 Serial Adapter Cable - RS232 Serial C... | Dell Australia
USB to Serial adapter for the FLEX-6000 series – FlexRadio
SEL-C662 USB Serial Cables | Schweitzer Engineering Laboratories