For a broader overview of the underlying chip architecture, you can refer to the official RP2040 Datasheet Further Exploration View the full technical drawings and PCB layouts in the official GitHub project folder to see how the USB-C and buttons are integrated. CircuitPython board profile
: Unlike the Pico's Micro-USB, the YD-RP2040 uses a USB-C connector. The schematic includes essential pull-down resistors on the CC lines to ensure proper power negotiation with modern USB-C hosts.