WeAct RP2350B Core Board is a small (41.4×41.1mm) USB-C board exposing all 48 I/Os from the Raspberry Pi RP2350B Cortex-M33/RISC-V microcontroller through two 30-pin headers. One thing missing from the WeAct RP2350 Core Board compared to the RP2350 Stamp XL is battery support, and the USB signals are routed to the USB-C port instead of the headers. Firmware support will be the same as any other Raspberry Pi RP2350/RP2040 meaning Raspberry Pi Pico C/C++ and MicroPython, plus any other firmware supported by the Raspberry Pi MCUs (e.g. Arduino).