In October 1988, the Compaq SLT/286 debuted. The first computer to use VGA (640-by-480-resolution) graphics, it revolutionized portable displays. The SLT/286 weighed 14 pounds and had a 20MB hard drive, a 12MHz 80C286 processor, a new low-power chip that is among the faster 80286 microprocessors, and it is certainly capable of handling most applications. And it has a detachable keyboard, another first among laptops. Operating system supplied at the time was MS/DOS 2.11.
COMPAQ SLT detachable keyboard