When possible, change the settings on your adapter. Note: Please ensure the signal and voltage level of your UART adapter does not exceed 3.3V. To connect to your device using a USB to Serial adapter, connect the following pins: We do not recommend this setup for beginners. Make sure your USB to Serial converter is able to communicate at baudrates of 115200.
When you do not own an expansion board, it is possible to connect to your device using a USB to Serial adapter.