Turn off the printer and unplug the power cord. If you want to install it in your Ender 3 Pro/Ender3 v2/ Ender-5/Ender 3 Neo/3 V2 Neo/3 Max Neo, need to flash the Ender 3 Pro/Ender 3 v2/Ender-5/Ender 3 Neo/3 V2 Neo/3 Max Neo firmware from Creality download website. easier to flash the firmware. Creality Official Ender 3 Silent Motherboard Upgrade V4.2.7 Mainboard This new upgraded silent motherboard is currently not pre-installed on our Ender-3 series and Ender-5 series 3D printers At this point, the silent mainboard is a separate upgrade for all 3 Ender’s series 3D Printer. For Ender 5, you will need to install the., HEX file yourself. Firmware comes pre-installed, pre-configured for the Ender 3, makes it totally plug & play. This new upgraded silent mainboard does not currently come pre-installed on our Ender 3, Ender 3 Pro, Ender 3 v2 or our Ender 5 printers. Thermal runaway protection is enabled. Aazon.co: CREALITY Ender 3 V3 KE Silent otherboard 32 Bit Silent... The Board is Optimized by Circuit, effectively solve Heating Problem. Mother Board Official Creality New Upgrade Motherboard Silent Mainboard V4.2.7 For Ender 3 Customized And Non-Standard Matchingl Ender 3 Silent , Also For Ender 3 Max/Ender 3 Neo/3 V2 Neo/3 Max Neo Creality Silent Mainboard 4.2.7