The Dell OptiPlex 3090 Ultra is an ultra-compact zero footprint modular all-in-one PC that can be directly mounted behind a monitor. The OptiPlex 3090 Ultra allows for easy deployment and maintenance while offering a choice of Tiger Lake Core i3, Core i5, and Celeron processor options along with flexible RAM and storage choices.
https://www.notebookcheck.net/The-Dell-OptiPlex-3090-Ultra-is-an-all-in-one-that-hides-neatly-behind-a-monitor-while-still-offering-enough-modularity-and-connectivity-options.513029.0.html
Can't wait till some ignorant parent buys one of these for their kid thinking it's an RTX 3090.
Hmm. Looks like someone in the comments here's assuming everyone else to be even dumber than them.