Macintosh Plus
Codename: "Mr. T"
Introduced: January 1986
Discontinued: October 1990
Processor: Motorola 68000
Processor Speed: 8 MHz
Cache: None
Data Path: 16 bit
System Bus: 8 MHz
Hard Drive Size: None
Media: 800k Floppy
Weight and Dimensions: 16.5 lbs., 13.6" H x 9.6" W x 10.9" D
Original Mac OS: System 1.1
Maximum Mac OS: Mac OS 7.5.5
Machine ID: 4
Motherboard RAM: 0 MB
Maximum RAM: 4 MB
Number of Sockets: 4 - 30 pin SIMMs
Minimum RAM Speed: 150 ns
Graphics Card: None
Video Memory: None
Built-in Display: 9" 512 x 342
Display Connection: n/a
Slots: None
Hard Drive Bus: None
Modem: None
PRAM: 4.5V alkaline
Power: 60 Watts
ADB: None
Serial: 2
SCSI: DB-25
USB: None
FireWire: None
Ethernet: None
Sound In: None
Sound Out: 8 - bit mono
History: The Mac Plus was the answer to complaints that the original Mac was not expandable. It doubled the ROM of the 512k from 64k to 128k, and increased the RAM to 1 MB (expandable to 4 MB). It was the first Mac to include a SCSI port, allowing for a variety of external peripherals, and was the first Mac to use the now familiar platinum case color (although it initially shipped in beige). The Mac Plus originally sold for $2600 U.S., and was sold to educational markets as the Mac ED.

