Quadra_900
Macintosh Quadra 900
Personal computer by Apple Computer
The Macintosh Quadra 900 is a personal computer designed, manufactured, and sold by Apple Computer from October 1991 to May 1992. It was introduced alongside the Quadra 700 as the first computers in the Quadra family of Macintosh computers using the Motorola 68040 processor.[1] It is also the first computer from Apple to be housed in an 18.6 inch (47 cm) tall mid-tower form factor, which by 1991 had gained momentum with PC manufacturers as a suitable design for departmental servers.
The Quadra 900 had a short lifespan; it was discontinued about six months after the first shipments in favor of the more powerful Quadra 950.