ASUS recently announced the Fanless Chromebox, a small form-factor PC based on the ChromeOS platform, with a wide range of display outputs and great wireless connectivity.
https://www.notebookcheck.net/ASUS-introduces-low-profile-Fanless-Chromebox-with-WiFi-6-and-multiple-4K-outputs-configurable-up-to-an-Ice-Lake-i7.515111.0.html