The NuMaker-M031TB development board, based on the M031TB0AE MCU, features Arduino UNO headers, full pin extensions, flexible power options, and an ammeter connector for real-time power monitoring. It includes a detachable Nu-Link2-Me debugger/programmer with SWD, ICP, VCOM, and 16 Mbit SPI Flash for both online debugging and offline programming, making it a versatile platform for prototyping and mass production.