[Packing List]: Our package includes 3PCS RP2040-Zero Mini Board. We also offer user manual to guide and assist you with the setup and use of our product. If you have any questions or concerns, please feel free to contact us. We will reply to you within 24 hours and provide with the satisfactory solution. [29× GPIO Pins]: With 29× multi-function GPIO pins (20× via edge pinout, others via solder points) that support configurable pin functions, the RP2040-Zero mini board allows for flexible development and seamless integration, ensuring convenience and adaptability. [2MB Flash]: Boasting 264KB of SRAM and 2MB of on-board Flash memory, the RP2040-Zero microcontroller panel offers ample storage space for data and programs. [Stamp Hole Design]: With its stamp hole design, the pico-like MCU module can be directly soldered onto carrier boards, providing seamless integration for custom projects. [RP2040 Microcontroller Chip]: The RP2040-Zero mini development board features the RP2040 microcontroller chip with dual-core arm cortex M0+ processor, flexible clock running up to 133 MHz, offering powerful performance.