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| Released in March 1987, the Macintosh SE introduced a true expansion path for compact Macs. It added a slot for either a second internal floppy drive or an optional hard disk, something the earlier Macintosh Plus lacked. It was the first compact Mac to feature the Apple Desktop Bus (ADB), allowing easy connection of multiple input devices such as keyboard and mouse. It also included an internal cooling fan and memory speed enhancements, delivering notably improved system performance. Under the hood was an 8 MHz Motorola 68000 CPU, with 1 MB of RAM as standard—expandable up to 4 MB via four SIMM slots. Video output supported a crisp 9-inch monochrome display at 512×342 pixels. The Mac SE was equipped with a 50-pin internal SCSI port for hard drives and offered faster floppy I/O than its predecessors. Early models shipped with one or two 800 KB floppy drives and ran System 4.0, including the newly coined “Macintosh System Software.” Manufactured until August 1989, the SE was replaced by the FDHD update (adding a high-density floppy option), and later succeeded by the SE/30 and Classic models. |
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