Apple Macintosh Plus

Apple Macintosh Plus was introduced in 16 January 1986 and added expandable memory, an 800KB floppy drive and SCSI to the compact Macintosh. It used a Motorola 68000 at 7.8336 MHz with 1MB standard; expandable to 4MB. SCSI opened the compact Macintosh to hard disks, scanners and removable storage.

Long production life and flexible SCSI storage made the Plus one of the defining early Macintosh systems.

Notable Features

• SCSI opened the compact Macintosh to hard disks, scanners and removable storage.
• SIMM sockets allowed practical expansion to 4MB.
• The 128KB ROM improved hierarchical file-system and device support.

Historical Significance

• Long production life and flexible SCSI storage made the Plus one of the defining early Macintosh systems.
• Its place in the range reflects Apple's progression from the original compact Macintosh toward broader professional, educational and portable markets.

Collector’s Notes

• Early beige and later platinum cases reflect Apple's changing Snow White styling
• Original keyboards, mice, storage devices and model-specific accessories help document a complete period configuration.

Specifications

Technical Information
Name	Apple Macintosh Plus
Manufacturer	Apple
Launched	Thursday, January 16, 1986
Launch Price	$2,599
Country	United States
CPU	Motorola 68000 at 7.8336 MHz
Units Sold
Operating System	System 3.0 through System 7.5.5
I/O	SCSI, two serial, ADB-style keyboard/mouse connectors, external floppy and audio
Keyboard	External extended keyboard and one-button mouse
Storage	Built-in 800KB floppy; external SCSI hard disks
Sound	Four-voice 8-bit mono sound
Graphics	512 x 342 one-bit bitmapped graphics
Display	Built-in 9-inch 512 x 342 monochrome display
ROM	128KB Macintosh Plus ROM
RAM	1MB standard; expandable to 4MB
CPU Speed	7.8336 MHz