What kind of PC/Laptop is this?

I saw a couple of DIY portable PC like this, a SFF in a suitcase, a portable 15" screen attached to it, hinge with a small keyboard, etc, in a kind of DIY enclosure.

I wanted to do it with my mini PC (a bee-link, it's like 4"x5"x2"), with a usb-c portable monitor (no external AC adapter needed), and my Lenovo Trackpoint Keyboard II (super slim, with a trackpoint so no need for external mouse), all in a small Aluminum Attache Case