M.2. Key E edge connector and screw-down port for Notecard Nano-SIM slot for (optional) additional carrier connectivity Qwiic I2C ports for attaching external peripherals JST connectors for LiPo battery and solar panel Micro-USB to power device and provide USB interface to Notecard This product requires a Notecard #blues

Expansion Shield for the Blues Feather Swan Carrier #blues

Feather-compatible dev board, powered by an STM32L4+ @ 120 MHz with 2MB of Flash and 640KB of RAM Expandable to 55 pins for access to additional I/O and buses Plenty of Flash and RAM for edge ML workloads or complex applications Support for C/C++, Arduino, and CircuitPython CORTEX Debug connector, enabling the use of Visual Studio Code, IAR, and STM32CubeIDE with optional SWD programmer #blues