Features: and high quality New ID design upgrade G0 series MCU- STM32G0B1RET6 Heat sink design upgrade, increase the heat dissipation area, greatly improve the heat dissipation performance Increase the fan that can control the heat dissipation of the device to lower the temperature of the device Increase the thermistor interface for protection circuit to prevent burning of the master control chip Specifications: Appearance Size: Approx. 103.75x70.25mm/4.08x2.77 inches Layer: 4 layers MCU: ARM Cortex-M 0+STM32G0B1RET 6 Power input: DC12/24V Logic voltage: 3.3V Motor driver: UART mode of onboard TMC 2209 Motor drive interface: XM, Z BM, EM Temperature sensor interface: THO, 2 channels 100KNTC (thermal resistance) Adapted display: 2.4-inch TFT, 3.5-inch TFT, Ender 3 original LCD 12864 screen, etc. PC communication interface: USB MicroB type, easy to plug and unplug, communication baud rate 115200 Support file format: G-code Recommended software: Simplify 3D, pro nterface, Repe tier-host, Maker ware 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: 1 Set MotherBoard