Adafruit FT232H Breakout - General Purpose USB to GPIO+SPI+I2C
Description
This chip is similar to their USB to serial converter chips but adds a 'multi-protocol synchronous serial engine' which allows it to speak many common protocols like SPI, I2C, serial UART, JTAG, and more! There's even a handful of digital GPIO pins that you can read and write to do things like flash LEDs, read switches or buttons, and more. The FT232H breakout is like adding a little swiss army knife for serial protocols to your computer!
This chip is powerful and useful to have when you want to use Python (for example) to quickly iterate and test a device that uses I2C, SPI or plain general purpose I/O. There's no firmware to deal with, so you don't have to deal with how to "send data to and from an Arduino which is then sent to and from" an electronic sensor or display or part.
This breakout has an FT232H chip and an EEPROM for onboard configuration. You can read tons more about this chip from FTDI's page and check out Adafruit's tutorial on how to get started and use their Python code to control the FT232H with Mac/Win/Linux and get access to their hundreds of CircuitPython libraries and tutorials.
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Adafruit FT232H Breakout - General Purpose USB to GPIO+SPI+I2C