How to fix METER Data Loggers ZL6 logger not showing in COM port?
- AAmanda StaffordAug 12, 2025
If you're using a Windows computer, reinstall the USB driver from metergroup.com/zl6-support. Note that Mac computers running ZENTRA Utility do not require a custom USB driver. The Em50 driver and USB Cable Adapter will not work for the ZL6. Check that the USB cable is securely plugged into both the logger and the computer. Ensure the logger has good batteries. Try pressing the TEST button on the logger to reset it. Try connecting to a second logger to see if the problem is with the first logger. Also, try a different micro-USB cable, making sure it's not a charging-only cable.