Features: 1.APPLICABLE MODELS: Compatible with for Ender 3, for Ender 3 Pro, for Ender 3 V2, for Ender 3 Maximum, for Ender 3 Neo, for Ender 3 V2 Neo, for Ender 3 Maximum Neo 3D printers. 2.SILENT DRIVER: Silent motherboard can reduce stepper motor noise, TMC super silent motor driver chip, super silent system design, so that the machine always run at low decibels. 3.FIRMWARE: MC2225 driver and V0.0.6 firmware (based on for Marlin 2.0.1) for V4.2.7 board, with pre installed bootloader. 4.FIRMWARE UPDATE: Please copy the correct firmware file into the formatted storage card, turn off the printer and unplug the power cord, plug in the storage card and power cord, then turn on the printer and wait 10 seconds to complete the firmware update process. 5.PCB MATERIAL: The Printer motherboard is made of PCB material, which will not be deformed for a long time, thus ensuring the stability for a long time. specification:Item Type: 3D Printer Motherboard Material: PCB Version: V4.2.7 Voltage: 24V Input/12V Output Firmware: V1.0.6/V2.0.1 Based on for Marlin 0.0.6 Motor Driver Stepper: TMC2225 Applicable Models: For Ender 3, for Ender 3 V2, for Ender 3 Pro, for Ender 3 Maximum, for Ender 3 Neo, for 3 V2 Neo, for 3 Maximum Neo PackageList:1 x 3DPrinterMotherboard 1 xUser Manual NoteOnly for for Ender 3 Plug and Play, if you want to install on other machines, please brush off the relevant machine V4.2.7 firmware