If Display pointer trails or Enhance pointer precision is enabled in your mouse settings, it can cause visibility issues with your mouse pointer on the display attached to the USB video adapter.
To resolve the issue, you can disable Display pointer trails and Enhance pointer precision, by following the steps below:
Windows 10 / 8
Windows 7 / Vista
Note: If your control panel is set to category view select Switch to Classic View
If this has not resolved your issue, refer to the following FAQ: https://www.startech.com/faq/usb-video-adapters-hardware-acceleration.