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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) : Electronics
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StarTech.com USB-C to Serial Adapter with COM Retention - USB / serial cable - DB-9 (M) to USB-C (M) - 40 cm - black | Dell Canada
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