This option is the separate upgraded for Ender 5 PLUS, just plug it in and you could start printing.
Notice: This new upgraded silent mainboard does not currently come pre-installed on Ender 5 PLUS.
-Super Quiet and Noise Reduction. Use TMC2208 Stepper Motor Drivers, which the key component to eliminate the printer's motor when printing.
-Bootloader pre-installed. The firmware can be modified by ARDUINO or Cura with the USB cable.
-Concern for safety. Thermal runaway protection is enabled, if the temperature rises out of control, the printer will stop heating and halt automatically.