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Tripp Lite 18in USB to Null Modem Serial Adapter FTDI w/ COM Retention M/F 18" serial adapter USB RS-232 U209-18N-NULL - Corporate Armor
Tripp Lite USB to Serial Adapter Converter RS 422RS 485 USB to DB9 1 Port External USB Type B PC Mac Linux 1 x Number of Serial Ports External - Office Depot
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