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.
You must disable driver signature enforcement temporarily to install legacy drivers. We’ll cover that below. Usb Download Cable Gev189 Driver Windows 10
The most reliable source for up-to-date firmware and drivers is the Leica MyWorld portal. Unlike standard USB-to-RS232 adapters
Force manual install
After installation, connect the GEV189 to a USB port (preferably USB 2.0, not 3.0). Wait 10 seconds. The driver should auto-load. Usb Download Cable Gev189 Driver Windows 10