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Apple Macintosh Classic Specs

All Macintosh Models | All 1990 Models | Dynamically Compare This Mac to Others

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Apple Macintosh Classic Redesigned essentially as a more modern, and less expensive, interpretation of the Macintosh Plus, the Apple Macintosh Classic features an 8 MHz 68000 processor, 1 MB of 2 MB of RAM and either a 1.44 MB disk drive or a 1.44 MB disk drive and a 40 MB hard drive in a sleek, compact all-in-one case with a 9" monochrome display.

Although it was slow for its day, the Macintosh Classic notably was the first Mac to sell starting just under US$1000.

To purchase or upgrade a vintage Mac -- as well as newer Macs -- see site sponsor OHS.



Click on the underlined category text for related details. The most commonly needed info is "open" by default, but all info is important.


October 15, 1990 September 14, 1992
Details: The "Introduction Date" refers to the date a model was introduced via press release. The "Discontinued Date" refers to the date a model either was replaced by a subsequent system or production otherwise ended.

Also see: All Macs introduced in 1990.
8 MHz 68000
Details: This model has a 32-bit processor. It has a 16-bit data path.
N/A N/A
Details: N/A
8 MHz N/A
Details: N/A
Macintosh ROM 512k
Details: N/A
None N/A
Details: N/A
30-pin SIMM 120 ns
Details: N/A
1 MB, 2 MB* 4 MB*
Details: *For more than the 1 MB of onboard RAM, a Classic-specific "Memory Expansion Card" is required. This expansion card has an additional 1 MB onboard and two SIMM slots for memory expansion.
1 MB 2*
Details: *Two RAM slots provided by the "Memory Expansion Card." SIMMs must be installed in pairs on this card.
Integrated Built-in
Details: N/A
N/A N/A
Details: N/A
9" Monochrome 512x342
Details: N/A
None, 40 MB SCSI*
Details: *Could be configured with a 40 MB SCSI internal hard drive. Hard drive standard on M0435LL/A configuration.
None 1.44 MB (Auto)
Details: N/A
None None
Details: N/A
None None*
Details: *If configured without an internal hard drive, one internal 3.5" bay is available.
All-in-One Macintosh Classic
Details: N/A
M0421LL/A* Macintosh Classic
Details: *M0421LL/A is configured with 1 MB of RAM and a 1.44 MB floppy disk. The standard configuration with 2 MB of RAM and a 40 MB hard drive was assigned order number M0435LL/A.
M0420, M1420 17
Details: N/A
3.6V Lithium N/A
Details: N/A
6.0.7 6.0.7-7.5.1, 7.5.3-7.5.5
Details: Earlier and later versions of the Macintosh System/Finder and Mac OS are not supported.

For systems capable of running older versions of the Mac OS -- as well as modern ones -- please see site sponsor OHS. OHS specializes in heavily upgraded Macs capable of running both Mac OS X and Mac OS 9 applications.
13.2 x 9.7 x 11.2 16.0 lbs (7.3 kg)
Details: In inches - height by width by depth, (35.5 cm, 24.6 cm, 28.4 cm).
US$999, US$1499 N/A*
Details: *As a collector's item, it still may retain value.

Photo Credit: Apple Computer, Inc. (MacUser Magazine Ad).



Click on the underlined category text for additional details. The most commonly needed info is "open" by default, but all info is important. The icons correspond with the icons for each port on the computer.


None 1 (DB-19)
Details: N/A
1 1 (DB-25)
Details: N/A
2 None
Details: Serial ports are marked by printer and modem icons.
None None
Details: N/A
None None
Details: N/A
None None
Details: N/A
1 (Mono) None
Details: N/A
1 None
Details: N/A
None None
Details: N/A
1 N/A
Details: 120V AC, 47-63 Hz Frequency, 76 Max Watts.

Icon Credit: Apple Computer, Inc.



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