The PSone was a redesigned Playstation released in the summer of 2000 right before the release of the PS2. It was compact, sleek, and had less hardware issues than the original console. It actually outsold all other consoles in the year 2000.
They even sold a portable screen to it, which was fairly popular. Many gamers brought it with them to wait for the PS2 to come out on the midnight launch. I never had the version, but man did I want one.