The ELEGOO Neptune 4 Plus/Max PCB Board is the ideal 3D printer spare part for upgrading and enhancing the performance of the Neptune 4 Plus and Neptune 4 Max 3D printers. This high-quality PCB board ensures seamless connectivity between essential components, such as dual cooling fans, extrusion motors, heating elements, and sensors, for a smooth and efficient 3D printing experience. Designed to deliver precision, this PCB upgrade simplifies the wiring process with well-labeled ports, including FAN 1, FAN 2, LED, PS, E0, TH, and HE, enabling hassle-free installation. This replacement PCB ensures your printer operates at its highest potential, making it ideal for both small and large-scale projects.