1、Ultra Quiet: This 3D printer silent board adopts TMC ultra quiet motor drive chip and ultra quiet system design which can lower the noise of stepping motor. 2、Designed for Ender: This motherboard is specially designed for Ender 3, for Ender 3 V2, for Ender 3 Pro, for Ender 5, for Ender 5 Pro 3D printer. 3、TMC2225 Driver: This for Ender motherboard is designed with TMC2225 driver and V0.0.6 firmware (based on for Marlin 2.0.1) for V4.2.7 boards. The bootloader is preinstalled. 4、Update Firmware Method: Please copy the correct firmware file to a formated storage card with no other files in it. Turn off the printer and unplug the power cord. Insert the storage card and power cord, and turn on the printer. Wait 10s to complete the firmware updating process. 5、Plug and Play: This 3D printer silent board is plug and play only for Ender. If you want to install it on other machine, please flash the relative machine V4.2.7 firmware. Item Type: 3D Printer Silent Board Material: Printed Circuit Board Version: V4.2.7 Voltage: 24V Input /12V Output Firmware: V0.0.6/V1.0.6 Based On Marlin 2.0.1 Stepping Motor Driver: TMC2225 Memory Card: Maximum 128GB (Card Not Included) Preinstalled Program: TMC2225 Driver, Marlin 2.0.1, and Boot Loader Are Pre Installed. Applicable Model: Designed for Ender 3, for Ender 3 V2, for Ender 3 Pro, for Ender 5, for Ender 5 Pro 3D Printer 1 x 3D Printer Silent Board 1 x User Manual