The NuMaker-IoT-M487 development board, powered by the NuMicro M487 MCU, integrates Ethernet, Wi-Fi, sensor, audio, and storage functions for versatile IoT prototyping. With hardware encryption, support for Arm Mbed OS, Arduino UNO and mikroBUS™ expansion, plus options for NB-IoT, 6LoWPAN, and image sensing, it provides a secure and flexible platform for sensor nodes and lightweight gateways in cloud-connected IoT applications.