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Ap pen dix A Installing a U SB Dr iver
*. The device name shown in the figure above is the name of an AH500 series CPU module. Different models
have different names.
Additional remark
 If the PLC is connected to another USB port on the computer, the system may ask the users to
install the driver again. The users can follow the steps above, and install the driver again. After
the driver is installed, the communication port number that the system assigns may be different.
 If Windows XP SP3 has not been installed on the computer, an error message will appear
during the installation. The users can deal with the problem in either way below.
a. Cancel the installation, install Windows XP SP3, and reinstall the driver according to the
steps above.
b. Get the file needed, and specify the path pointing to the file in the Files Needed window.
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