It replaced the Motorola 68020 processor of the II with a 0 processor (running at the same clock speed), and the 800K floppy drive with the SuperDrive. Macintosh IIx - introduced by Apple in 1988 as an incremental update of the original Macintosh II model.It was announced with the Macintosh SE on Mabut reportedly did not ship until April 1987. Macintosh II - first personal computer model of the Macintosh II series and the first Macintosh to support a color display.Macintosh Color Classic - the first compact Macintosh with a built-in color screen.Macintosh SE/30 - an updated version of the Macintosh SE.Macintosh SE - released by Apple Computer as an all-in-one successor to the Macintosh Plus with additional capacity for expansion as a workhorse computer.Macintosh 512K enhanced (521ke) - introduced on April 14, 1986, a less expensive alternative to the top-of-the-line Macintosh Plus.Macintosh 128K - The first Macintosh, released on January 24, 1984.