SKU: OT730-D72 Article number: AA106 EAN: 8720589817128
The most well-known and reliable USB to serial converter is this FT232RL USB TTL Serial Port Adapter! You need this, for example, to connect the Pro Mini to your computer. Also suitable for the ESP32-CAM.
NOTE: does not contain an original FT232RL chip but a clone that works almost the same.
Specifications:
Converts TTL logic to computer RS232
3.3V or 5V TTL (adjustable via jumper)
RX (3.3V or 5V)
TX (3.3V or 5V)
Mini-USB female connector
Drivers for Windows, Linux, and Mac OS can be found here.