I downloaded Weatherlink 5.8 and checked USB to check out the software.
Big mistake, it changes a byte in the datalogger and will only run USB . They have a program to change it back to serial but it does not work and you get an error code. Called Davis support and they know it and are working on it, no time span to fix the problem. My web page has been down for three days. They agreed to swap out my logger to get me going. MY USB has always work well. I am going back to 5.7 for a while, waiting for logger.
DO NOT CHECK USB ON 5.8 WEATHERLINK SOFTWARE!!!!!!!!!!!!!!!! OR NOT COM PORTS PERIOD. There is a warning about third party software and com port. But no warning of a one way street. Joe
Update: the later versions of wlink 5.8 now have the cpx210.exe program included in the install...run that is the usb data logger has been set to USBexpress mode, to set it back to normal USB to serial mode