[ivan_gammel]

Well, the connector does not really matter, the key is the hardware at the extension. CPU+GPU+screen+network+camera+HDD with some software that you need only in workstation mode etc. The software could be sandboxed by the OS on your device, security of extra CPU and GPU is interesting, but probably solvable problem.

[zozbot234]

That's pretty much an all-in-one PC. E.g. an iMac, or a Surface Studio.

[ivan_gammel]

yes, if all components are present, it looks like an all-in-one PC. But again, I’m talking about an extension, where OS and your data belong to your portable device and run in trusted environment using extension resources when necessary.