The monitor(s) appear dull or dark when connected to my Mac

This article will guide macOS users through disabling High Dynamic Range.

  1. In macOS Catalina 10.15.4 or later, choose Apple menu > System Preferences.
  2. Click Displays. Three Display Preference windows will appear, one for each SmartDesk Connect display. 
  3. Deselect the High Dynamic Range checkbox for each display.

NOTE: You’ll have to disable it for each of the SmartDesk Connect monitors, a total of 3 checkboxes.