Dualarchitecture RP2350B microcontroller with an M33 core, up to 150 MHz, enabling flexible switching between two architectures to fit development and production needs. USB mass storage capability for draganddrop downloading and data transfer, simplifying firmware updates and testing. Broad onboard I/O and expansion for rapid prototyping and product integration, including an onboard port, card slot, USB port, 40pin GPIO header, and a reserved PSRAM port. Builtin PSRAM option with a TypeC interface, designed for easy connection with a reversible insertion orientation. Designed for development and seamless integration into finished products, delivering reliable performance and compatibility. Use scenarios: Rapid firmware development and testing: connect via USB and draganddrop firmware updates, reducing setup time. Prototyping and memory expansion: leverage the reserved PSRAM port and 40pin GPIO to interface sensors, peripherals, and custom modules. Product integration and fieldready deployments: utilize the card slot, USB port, and onboard interfaces to build and functional devices with flexible memory and connectivity options.