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IOGEAR - GUC232A - USB to Serial Adapter
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USB to Serial Converter - TRENDnet TU-S9
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USB to Serial RS-232 DB9 FTDI Mini Adapter with Extension Cable
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HP USB to Serial Port Adapter J7B60AA B&H Photo Video
Parallax USB To Serial (RS-232) Adapter With Cable - Parallax
Dual port RS232 Serial to USB adapter for RS232 data conversion.
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USB to RS232 Serial for Vista -- DataPro
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