Your browser does not seem to support JavaScript. As a result, your viewing experience will be diminished, and you may not be able to execute some actions.
Please download a browser that supports JavaScript, or enable it if it's disabled (i.e. NoScript).
I couldnt find the crystal used in fire M5stack, 40Mhz, 10ppm, 22pF load capacitance, who is the manufacturer for the mentioned part?