ASRPRO 2.0, adding a power chip to reduce the risk of master burning to improve stability, adding TVS diodes to prevent high-voltage damage components, one-click download to solve the reset problem. One-click download function, one-click solution circuit reset failure caused by the program can not be downloaded. Add 1.25 pitch interface, convenient for users to connect the external microphone, convenient for users to DIY. 3.3V power chip, add 3.3V power chip, increase the ability to drive external devices, protect and reduce the risk of main control burning, improve stability. TVS diode, ASRPRO2.O adds TVS diode, which can prevent excessive voltage damage to on-board components and greatly improve durability.