Need further help? Leave a comment below with your exact error code and Windows 10 build (check via winver ).
If you cannot find the specific GE file, use the Chipset ID from Phase 2.
Once your computer reboots, verify that Windows 10 recognizes the cable. Usb Download Cable Gev189 Driver Windows 10
The Leica GEV189 (727 302) is a popular USB-to-RS232 transfer cable used to connect Leica total stations (TPS400, TPS700, TPS800, FlexLine) and GPS equipment to a PC for data transfer. When upgrading to Windows 10, many surveyors and engineers find that their familiar hardware no longer connects. This issue arises because the GEV189 cable relies on an older serial converter chipset that requires updated drivers to function correctly within the Windows 10 environment.
| Step | Action | Key Points | | :--- | :--- | :--- | | | Locate the Driver | Use the official CD, download from the Leica Geosystems website, or try trusted vendors like Sunbelt Sales. | | 2 | Install the Driver | Run the installer and follow the instructions, preferably before plugging in the cable for the first time. | | 3 | Connect the Cable | Plug the USB end of the GEV189 into your computer. | | 4 | Verify in Device Manager | Look for it under Ports (COM & LPT) and note its COM port number (e.g., COM3 ). | | 5 | Configure Software | In your Leica software (e.g., FlexOffice), select the same COM port and match the instrument type and baud rate. | Need further help
Do not rely on Windows Update to find this driver. Microsoft's generic repository frequently installs outdated or overly generic Prolific drivers that cause the cable to fail.
Guide to Installing GEV189 USB Cable Drivers on Windows 10 Leica GEV189 (734700) Once your computer reboots, verify that Windows 10
Prevent Windows from updating this specific device. Download the official Microsoft "Show or hide updates" troubleshooter tool, search for pending Prolific/Leica driver updates, and set them to Hide . Alternatively, use third-party tool software utilities designed to permanently lock a specific USB driver version. Issue 3: Data Transfer Software Cannot Connect
Windows 10 may block drivers that aren't "digitally signed" for its specific version. If your cable isn't working, follow this manual process: Connect the Cable:
Click . If your office surveying software requires a low COM port number (such as COM1 or COM2) and Windows assigned a high number like COM14, use the drop-down menu at the bottom to manually reassign it to an open, low-numbered port. Preventing Windows 10 Update from Overwriting Drivers