First of all, you have to determine whether the installation program of Hongye Municipal Pipeline 9.0 is 64-bit or 32-bit, and whether it corresponds to your own computer system. Secondly, see if the light of the single lock is always on. If the light of the stand-alone lock is flashing, it proves that the encryption lock driver has not been installed successfully. Download the stand-alone driver in Hongye official website and install it correctly according to the instructions. Then, you can try to change the USB socket. If not, you can call Hongye Customer Service for detailed consultation.