Delta AS Series Operation Manual page 446

(6) Open the Windows Device Manager window. If the Delta PLC port for the USB device is under Ports
(COM & LPT), the installation of the driver is successful, and Windows assigns a communication port
number to the USB device.
Additional remarks

If you connect the PLC to a different USB port on the computer, the system may ask you to install the driver
again. Follow the steps above, and install the driver again. After you install the driver, the communication
port number that the operating system assigns to the USB device may have changed.

If Windows XP has not been updated to the version SP3 on the computer, an error message stating the
missing files will appear during the installation. Resolve this issue with one of the following steps.
(a) Cancel the installation, install Windows XP SP3 on the computer, and reinstall the driver according to
the steps above.
(b) Get the file needed, and specify the path where the file is stored for the missing file in the error
message window.
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