Creality V4.2.7 Silent upgrade Mainboard Silent function Driver: TMC2208 drivers. Marlin 1.1.8 and Bootloader installed. Thermal runaway protection is enabled. The Board is Optimized by Circuit, effectively solve the Heating Problem. Easy to Operate: With USB Port, can be Worked With E/Z/Y/X Axis Motor. Compatible: Ender 3/ Ender 3 Pro/ Ender 3 v2/ Ender 5/…