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USB/Serial Converter [FT232RL] : ID 18 : $17.50 : Adafruit Industries, Unique & fun DIY electronics and kits
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SABRENT USB 2.0 to Serial (9-Pin) DB-9 RS-232 Converter Cable, Prolific Chipset, - HEXNUTS - , [Windows 10/8.1/8/7/VISTA/XP, Mac OS X 10.6 and Above] 2.5 Feet (CB-DB9P) - Newegg.com
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Mettler Toledo RS232 to USB Converter Cable for XPR Microbalances and Ultra-Microbalances | Fisher Scientific
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Amazon.com: UTEK UT-880 USB to RS-232 Interface Protocol Vonverter VER 2.0(1-Port USB to RS-232 Serial Converter with ESD Protection) : Electronics
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USB C to Serial Adapter w/ COM Retention - Serial Cards & Adapters | Add-on Cards & Peripherals | StarTech.com
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Insignia™ 1.3' USB-to-RS-232 (DB9) PDA/Serial Adapter Cable, with Prolific Chipset Black NS-PU99501 - Best Buy
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