Unlike standard USB-to-RS232 adapters, the GEV189 cable houses a proprietary logic-level converter and a specific USB bridge chip (often a Silicon Labs CP210x or FTDI FT232R, depending on the clone vs. original). The driver you need depends entirely on which chipset your cable uses.

Look for an entry named or Prolific USB-to-Serial Comm Port .

Open and locate the problematic port entry with the yellow warning triangle. Right-click the device and select Update driver . Click "Browse my computer for drivers" .

Identifying a counterfeit GEV189 cable can be tricky, but here are a few key indicators to check:

I can provide the exact baud rate settings and transfer steps for your specific configuration. Share public link

GEV189 (734700) USB download cable Go to product viewer dialog for this item.