Features: brand new and high quality You just plug them in and start printing! Super quiet and noise reduction. Use TMC2208 Stepper Motor Drivers, which the for key component to eliminate the printer's motor when printing. Bootloader pre-installed. The firmware can be modified with the USB cable. Thermal runaway for protection is enabled. If the temperature rises out of control, the printer will stop heating and halt automatically. Specifications: Material: Plastic+Metal Weight: 150g Size: 11.8x8x2cm/4.65x3.15x0.79inch for: Ender 5 PLUS Note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Silent Mainboard