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StarTech.com USB to Serial Adapter - Null Modem - FTDI USB UART Chip - DB9 (9-pin) - USB to RS232 Adapter - Add a Null Modem RS232 serial port to your laptop
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StarTech.com USB to Serial Adapter - 1 port - USB Powered - FTDI USB UART Chip - DB9 (9-pin) - USB to RS232 Adapter - ICUSB2321F - Serial Adapters - CDW.ca
Amazon.com: jim.sh Micro1v8 (2-Pack) - USB to 1.8V Serial Adapter with LEDs - FTDI FT230X chip : Cell Phones & Accessories
Amazon.co.jp: FTDI Chip USB – Serial TTL Converter Cable, Black, 1.8 m TTL – 232r – 3 V3 : Computers
SparkFun USB to Serial Breakout - FT232RL - BOB-12731 - SparkFun Electronics
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CableCreation USB to RS232 Adapter with PL2303 Chip 3.3 FT, USB 2.0 to RS232 Female DB9 Serial Converter Cable for Cashier Register, Modem, Scanner, Digital Cameras, CNC, 1M Black - Walmart.com