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USB to RS232 Serial Converter -- DataPro
USB to RS-232 DB9 1-Port Serial Interface Adapter - Sealevel
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USB to RS232 DB9 Serial Adapter Cable - Serial Cards & Adapters | StarTech.com
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USB Serial - USB 2.0 RS232 Adapter with LED Indicators
Insignia™ 1.3' USB-to-RS-232 (DB9) PDA/Serial Adapter Cable, with Prolific Chipset Black NS-PU99501 - Best Buy
High-Speed USB-to-Serial Adapter for Windows 8 32/64-bit - U.S.Converters
Thunderlinx™ USB to Serial adapter - U.S. Converters LLC
USB to Serial Converter Cable QI
Low-cost USB to RS232 converter
ATEN UC232A USB to Serial Converter (5-Pack) UC232A5PK B&H Photo
