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StarTech.com ICUSB2321X USB to Serial Adapter - 1 Port - COM Port Retention - Texas Instruments TIUSB3410 - USB to RS232 Adapter Cable - Newegg.com
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Black Box USB to RS-232 Converter - DB9, 1-Port - 3.58 ft DB-9/USB Data Transfer Cable for POS Device, Barcode Scanner, Mobile Computer, Touchscreen Monitor, Security Camera, PDA, Peripheral Device, PC, Notebook,
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