I "assembled" a similar one earlier than it appeared on the market. It contains a Linux and utils/apps on a Raspi4 platform
Discussion
Cool, I got it running on a Pi 4 as well, but the rest of the internals are old and need replacing soon.
Yes, it is an old platform. But all platform will be old sometimes :-) The softwares are upgradable. E.g. Pi-hole, which originally was developed for Raspi but Umbrel also contains it