Hi @discoverey1, the Tobii Tracker 4C is specified to work at a monitor with most 27 inches with 16:9 Aspect Ratio
and 30 inches with 21:9 Aspect Ratio, so officially we cannot recommend this particular monitor.
That being said, many users have been able to get the eye tracker working correctly with larger screens and have posted their setup instructions within the forum, but that is not something we can necessarily endorse.