It came slightly after the IBM Portable PC (5155) which was released in 1984. That was a real luggable very similar to the Compaq. So I'd say the 5140 (which

It came slightly after the IBM Portable PC (5155) which was released in 1984. That was a real luggable very similar to the Compaq. So I'd say the 5140 (which I've seen but never owned, I did think I was getting one once from a contest) was thought of as a luggable, but an improvement over what came before it.