Macintosh II (1987)
The Apple Macintosh II is the first personal computer model of the Macintosh II series in the Apple Macintosh line and the first Macintosh to support a color display. The Macintosh II was designed by hardware engineers Michael Dhuey (computer) and Brian Berkeley (monitor). A basic system with 20 MB drive and monitor cost about $5200, A complete color-capable system could cost as much as $10,000 once the cost of the color monitor, video card, hard disk, keyboard and RAM were added. This price point placed it in competition with workstations from Silicon Graphics, Sun Microsystems and Hewlett-Packard. The Mac differed from those systems by retaining the single user Mac OS instead of adopting Unix. While the hardware features were comparable to workstation-class systems, the OS features and software base placed it more squarely in competition with i386 based PCs and the Amiga 2000.
via Wikipedia: http://en.wikipedia.org/wiki/Macintosh_II