Apple M0001A Macintosh Plus 1MB Desktop Computer. The Macintosh Plus computer was the third model in the Macintosh line, introduced two years after the original Macintosh and a little more than a year after the Macintosh 512K
No Hard Drive Boots from Floppy Sold from January 16, 1986 to October 15, 1990 Original Release Price: $2,600 USD Form Factor: Macintosh 128k 8 MHz 68000 processor 1 MB of RAM - (4 qty 150 ns 30-pin SIMM) 800k 3.5 Double Sided floppy disk drive (Not PC Compatible) Internal Hard Drive: None. Was not an option Beige all-in-one case 9 monochrome display (512 x 342 pixel 72 PPI Resolution) First Macintosh model to include a SCSI port to allow external expansion 4 RAM Simm slots to allow the RAM to be expanded to 4MB. (One lead of the 256k resistor must be clipped to use 1 MB SIMMs.) Mac OS Supported: 1.1-7.5.1, 7.5.3-7.5.5 Power: 105V-125V AC, 50-60 Hz Frequency, 60 Max Watts. The case does have yellow discoloration from the sun. Does not include keyboard or mouse. The Macintosh Plus was the last classic Mac to have a phone cord-like port in front for the keyboard, as well as the DE-9 connector for the one button mouse; later models use ADB ports.