Compaq's first computers' form factors were portable, also called "luggables", and then "lunchbox computers", and together constituted the Compaq Portable series. These computers measured approximately 16 inches (410 mm) deep, 8 inches (200 mm) tall, and approximately 20 inches (510 mm) wide. As the products evolved, laptops and notebooks were created offering a new level of portability that caused the market to explode.
Some of the portables, the Portable and Portable II, had CRT monitors, while later the Portable III and the Portable 386) had flat, monochrome, usually amber, plasma displays. The portables came/could come with internal hard disk drives on 0.5" shock mount springs; diskette drives, usually 5-1⁄4" double- or quadruple-density drives; batteries; and/or a dual-ISA expansion chassis, about one full-drive-height wide. Note this was before the term "ISA" became a standard. The Compaq Portable 486 included mono and color LCD screens and were battery powered.