Onboard USB port also functions as the card slot interface between USB and slave, enabling reading and writing to the memory card to manage charging and discharging the onboard battery, which is beneficial for mobile applications. Dualarchitecture RP2350B microcontroller with M33 core running up to 150 MHz, providing flexible switching between architectures to balance performance and power efficiency. Comprehensive I/O and expansion options including onboard port, card slot, USB port, 40pin GPIO, and a reserved PSRAM port for easy development and seamless integration into products. Builtin reserved PSRAM with a TypeC interface, designed for simple insertion without orientation concerns. Two to three use scenarios Mobile and portable devices: use the onboard card interface for rapid memory access and efficient battery management, while leveraging the speed RP2350B core for responsive operation in batterypowered applications. Prototyping and product integration: the combination of USB, card slot, GPIO, and reserved PSRAM port provides a versatile development platform that can be quickly adapted into products or prototypes. Edge computing and data logging: take advantage of the multiple interfaces and the PSRAM option to run localized processing, store data on a memory card, and interface with USB peripherals in compact environments. Key attributes and benefits Functionality: multiinterface board with USB, card slot, and PSRAM support to cover charging/discharging management, data storage, and rapid development needs. Compatibility: RP2350B MCU with M33 core supports flexible architectural configurations and relates to common embedded workflows. Performance: up to 150 MHz clock speed enables responsive operation for a range of embedded tasks. Expansion: 40pin GPIO and reserved PSRAM port provide straightforward expansion for development and productready designs. Memory and interface access: builtin PSRAM with TypeC interface simplifies memory expansion and reduces insertion issues. Applications Embedded development boards for portable electronics and batterypowered devices. Prototyping platforms for consumer electronics requiring USB connectivity, memory card interfacing, and optional PSRAM expansion. Edge devices and datalogging solutions needing reliable USB access, memory card storage, and flexible processing capability.