This driver is installed in the operating system of Windows 7/8/8.1/10. Download the file and unzip it, and install it according to the operating system:
32 bit operating system: running CP210xVCPInstaller_x86.exe
64 bit operating system: running CP210xVCPInstaller_x64.exe
After the installation of the file, then insert the alarm, you can recognize the virtual serial port.