Disclaimer: This document is provided as a general guide and includes no warranties or guarantees as to its accuracy. Anything you do with this information is your own responsibility and at your own risk.
Note
This pinout applies to the stock E3S1 motherboard with the STM32F401RCT6 microcontroller, though it may apply to other E3S1 motherboards, such as the one with the STM32F104 IC.