These machines, from companies like Kaypro and Osborne ... It packs a modern desktop computer and a 15.6 inch laptop display into a custom designed case, but like so many other projects, the ...

which was very inexpensive for a computer of that era. Weighing in at nearly 30 pounds and requiring AC power, the Osborne was really more "transportable" than a true portable. See CPM and Kaypro.