USB to RS-422 & RS-485 Adapter
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3. "Error installing USB driver ftdi_ser.dll" message
The following installation error may be displayed for a number of reasons:
The driver name has been miss pelt · The ".dll" file extension may be required for some platforms · The
required driver files are not in the \\Windows directory · The driver file is in the wrong binary format
4. "Unidentified USB Device" appears each time the driver name is entered
This error can be caused when the VID and PID listed in the INF file does not match the VID and PID
combination programmed into the device. It can also be caused if the INF file has not been copied to the
\\Windows directory.