Archive No. 6
Mac Plus
68030 Power!
Historical Context
The first Mac that was genuinely good enough. The Plus shipped with 1MB of RAM standard, a double-sided 800K floppy, and - crucially — a SCSI port for external storage. Sold continuously for three years and six months, longer than any other Mac before it. Apple manufactured so many that a Plus often costs less than a Classic today, despite being older. The machine that proved the Macintosh concept was commercially sustainable. This specific computer, has a secret inside - a Total Systems Gemini 20MHz 030 upgrade board. This ingenious upgrade clipped onto the 68000 CPU and supercharges this machine with a much faster CPU.
Specifications
Technical Blueprint
Ref: M0001A
Processor
Motorola 68030 20MHz
Memory
4MB
Storage
External BlueSCSI, 800Kb floppy
Operating System
MacOS 7.0.1
Hardware Notes
PRAM battery removed
Gallery
Detailed Observations
The Story
Total Systems Gemini 20MHz 030 upgrade board installed
Restoration Log
Work Done
Every repair, recap, and restoration performed on this machine — documented as the work was completed.