Dell likes to pull this stunt on other devices too. Like their 1L desktops in the OptiPlex line that I managed for many years. Even though we were using genuine Dell power adapters, if they became slightly unplugged but remained powered, they would enable PROCHOT.

This was fine until the machines randomly started setting PROCHOT on genuine power adapters that were fully plugged in. Eventually I just deployed a configuration with PDQ to all the machines that ran ThrottleStop in the background with a configuration that disabled PROCHOT on login.

Unfortunately, I couldn't get it to consistently disable PROCHOT pre-login, so students and teachers in my labs would consistently wait 3-4 minutes while the machines chugged along at 700 MHz as they prepared their accounts.