I found this good info in the Davis Manual:
Note: If you have a USB data logger and want to use it with third party software, you will need
to set up your data logger so that it emulates a COM port connection. You should click
Cancel, then follow the instructions for a WeatherLinkSER connection. See
“WeatherLink SER” on page 10.
Once the data logger has been set up as USB direct, it cannot be easily converted to
emulate a serial port connection within the software. A utility is included with the
WeatherLink software that allows you to convert it from a direct USB data logger to a
USB data logger that emulates the COM port. To use this utility, select CP210X to Serial
Converter in your WeatherLink program group on the Start menu of your computer
(Start>AllPrograms>WeatherLink>CP210X to Serial Converter) and run the utility to
convert your data logger back to emulate a COM port.
Thanks for posting this. It is a good reminder. I have seen so many posts over the years where new users of a USB logger can’t get it to be recognized. The answer is to install the Silicon Labs CP210x drivers. In some cases it has been a used logger without the Weatherlink cd or manual. So the only way to get the driver is to download it from the following link.
