Feature 1. 32 bit 550 MHz ARM -M7 series STM32H723ZET6 MCU; 2. Onboard button to enable DFU mode to update bootloader; 3. The thermistor circuit is to prevent MCU damage from shorted heated bed and heater connections; 4. Selectable voltage (24V, 12V, 5V) for fan, no more need for external stepdown thus preventing board damage from error; Upgraded with eFuse protection, which responses faster with strong protection, effectively protecting the motherboard from being damaged caused by short circuits, over-current, electric , etc. MCU firmware can be upgraded via SD card, or use DFU via Klipper's make flash 10 EZ driver sockets, working with pinless driver, to use; Onboard SPI and UART, can be used by simply setting in the firmware, no need for a jumper. Support power loss , filament runout sensor, CAN, auto power-off, BLTouch, RGB, etc Replaceable fuse for easy maintenance 3 x 4 pins fan ports, also for connecting water cooling system Onboard switch port, supports NPN and types, 24V, 12V, 5V voltage selectable Onboard SPI interface for connecting acceleration sensor to enable Klipper's input shaping. Color: black Material: plastic+metal Package Contents: 1 x Octopus MAX EZ V1.0 Motherboard Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.