Features: BTB connectors are adopted between the motherboard and core board, allowing the choice of other core board solutions in addition to CM4. MCU firmware can be upgraded via SD card, or use DFU via Klipper's make flash command. Onboard DIAG pin, easily configurable with jumpers. Onboard SPI and UART mode of EZ driver, which can be used directly without a jumper. Onboard SPI interface for connecting acceleration sensor to enable Klipper's input shaping. Support power loss recovery, filament runout sensor, auto power-off, BLTouch, RGB, etc. TPS5450-5A power supply chip supports DC12/24V power input, current output rated at 5A max continuous and 6A max instantaneous, sufficient power supply for Pi. The temperature sensor interface adopts a high-precision pull-up resistor. The thermistor circuit is protected to prevent MCU damage from shorted heated bed and heater cartridge connections. 32bit 64MHz ARM Cortex-M0+ series STM32G0B1RE MCU. Brand new and high quality Specifications: Size:90.8x120mm MCU:ARM Cortex-M0+ STM32G0B1RE 64MHz Motherboard Voltage:DC12V-DC24V Motor Voltage:DC12V-DC56V Logic Voltage:DC 3.3V Heater Connection:Heated Bed (HB), Heater Cartridge (HE0, HE1) HB Port Max Current:10A Continuous, 11A Instantaneous Heater Cartridge Max Current:5A Continuous, 6A Instantaneous Fan Port:3 x CNC, 2 x Always On Fan Port Max Current:1A Continuous, 1.5A Instantaneous Overall Max Current(Heater Cartridge+Driver+All Fans):10A Expansion Port:BLTouch, PS-ON, PWR-DET, Fil-DET, RGB, CAN FD, SPI Motor Driver:Support EZ5160, EZ2209, EZ2208, EZ2225, EZ2226, EZ2130, EZ6609... Thermistor:3 x 100K NTC PC Connection:Micro-USB Note: Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurment. Package includes: 1 x E3EZ V1.0 Motherboard