Chipsee has developed new add-ons for the Raspberry Pi Computer Module 4, including one that turns it into an all-in-one PC. The so-called All-In-One Pi supports VESA desktop mounts in two colours. There is also an Industrial Pi board that utilises the Compute Module 4 as a 7-inch tablet with optional 4G connectivity.
https://www.notebookcheck.net/Raspberry-Pi-Transform-the-Compute-Module-4-into-a-fully-fledged-PC-with-the-All-In-One-Pi.529279.0.html