STM 32-bit Silent Motherboard for Neptune 4 Max/Plus

Powered by an RK3328 quad-core processor, this motherboard runs Linux and Klipper smoothly for stable, responsive 3D printing performance. A dedicated STM32 MCU handles real-time motion control for precise operation. Fully compatible with ELEGOO Neptune 4 Plus and Neptune 4 Max, making it a reliable replacement part.