The FTDI driver was not working when the connection between PME (Palette Master Element) and my BenQ monitor failed. How can I fix it?

1. Remove all USB devices from the monitor, except the USB-C cable or USB
    upstream cable (USB TypeA to TypeB cable) and the calibrator that
    connects to the PC/NB and the monitor.

2. Uninstall the current version of the PME program and all of the calibration
    programs

3. Refer to the following image and remove the FTDI driver if your OS is
    Windows-based. 

4. Download the latest version of PME from BenQ's official website and
    re-install it 

5. The Key Step: When installing PME software, keep the USB-C or USB
    upstream cable (USB TypeA to TypeB cable) connected to the monitor and
    PC/NB directly and make sure all drivers are correctly installed during the
    installation.

6. Reboot the PC/NB and open PME to check if the FTDI driver works.

7. If the FTDI error message persists, unplug and re-plug the USB upstream
    cable (USB TypeA to TypeB cable) or replace a new one.

8. If the FTDI error persists and your OS is Windows-based. , please follow
    Step 3 to uninstall the FTDI driver and install the FTDI driver independently.
   (You could download it from  BenQ's official website)
 

If the issue still exists, please contact your BenQ local service center.

Problem Symptom