Features Supports Various Screen Compatibility: This 3D printer control board is compatible with Marlin2.0 firmware, LCD2004, 12864 screen, MKS MINI12864V3, and MKSTFT serial screen, offering versatile screen support for enhanced user experience. Advanced 32 Bit Microprocessor: Equipped with an ESP32 DOWD V3 chip, this motherboard features a Xtensa dual core 32 bit LX6 microprocessor with a clock frequency of up to 240MHz, ensuring high-speed performance and efficiency. Powerful Integrated Module: The main board integrates ESP32 WROOM 32U module, a dual core 32 bit high-speed MCU, WIFI, and Bluetooth module, allowing for firmware updates through USB and web page control, providing powerful and versatile performance. 8M Byte Flash Memory: With a built-in 8M byte Flash memory chip, this module offers effective protection for various application scenarios, ensuring stable and reliable operation. Back EMF Protection Circuit: Designed with a protection circuit for back EMF generated by the stepper motor, this motherboard significantly reduces motor driver damage, ensuring long-term reliability and durability. Specification: Item Type: ESP32 3D Printer Motherboard MCU: ESP32 WROOM 32U MCU Frequency: 240MHz Flash: 8192K RAM: 520Kb Power Input: DC12-24Vbetween20A Heating Head, Hot Bed: 2 Heating heads, 1 hot bed Temperature Measurement: 3NTC100K: TH1, TB, TH2 (requires jumper selection) Controllable Fans: 2 Way controllable fans Motor Interface: 5 Axes drive, 6 motor interfaces (double Z axes parallel output) Drive Mode: STEP or DIR standard mode Drive Signal: Pin out the signal, support external Subdivision Settings: DIP switch to set subdivision LCD Interface: Support ordinary LCD2004, 12864; support for MKS MINI12864V3 Serial Port: Reserved serial port 2, support for MKSTFT series serial port screen Limit: X, YZ, MT DET 3D TOUCH: Support Power Protection: Non reverse polarity protection and power spike protection Firmware: For Marlin2.0.x Firmware Update Method: Online download via USB Package List: 1 x ESP32 3D Printer Motherboard 1 x USB Cable A C Type C(1 meter) Note: MOS drive circuit, limit input, and temperature measurement circuit add Schottky diode protection to reduce damage to IO from external spikes. Package List 1 x ESP32 3D Printer Motherboard 1 x USB Cable A C Type C(1 meter)