Introduction Date: October 15, 1990
Discontinued Date: September 14, 1992
Original Mac OS: 6.0.7
Supported Mac OS: 6.0.7-7.5.1, 7.5.3-7.5.5
Apple Order/Model: M0421LL/A*
Model Family: M0420, M1420
Processor Speed: 8 MHz
Processor Type: 68000
Standard RAM: 1 MB, 2 MB*
Maximum RAM: 4 MB*
Processor Upgrade: N/A
FPU: N/A
System Bus Speed: 8 MHz
Cache Bus Speed: N/A
ROM Type: Macintosh ROM
ROM Size: 512k
L1 Cache: None
L2 Cache: N/A
RAM Type: 30-pin SIMM
Min. RAM Speed: 120 ns
Motherboard RAM: 1 MB
RAM Slots: 2*
Video Card: Integrated
VRAM Type: Built-in
Standard VRAM: N/A
Maximum VRAM: N/A
Built-in Display: 9" Monochrome
Native Resolution: 512x342
2nd Display Support: N/A
2nd Max. Resolution: N/A
Standard Hard Drive: None, 40 MB
Int. HD Interface: SCSI*
Standard Optical: None

Standard Disk: 1.44 MB (Auto)
Standard Modem: None
Standard Ethernet: None
Expansion Slots: None
Expansion Bays: None*
Case Type: All-in-One
Form Factor: Macintosh Classic
Apple Subfamily: Macintosh Classic
Gestalt ID: 17
Battery Type: 3.6V Lithium
Battery Life: N/A
Dimensions: 13.2 x 9.7 x 11.2
Avg. Weight: 16.0 lbs (7.3 kg)
Original Price (US): US$999, US$1499
Est. Current Retail: N/A*
Video (Monitor): None
Floppy (Ext.): 1 (DB-19)
ADB: 1
SCSI: 1 (DB-25)
Serial (Standard): 2
Serial (Geoport): None
Modem: None
Ethernet: None
S-Video Input: None
S-Video Output: None
Microphone: None
Sound In: None
Sound Out: 1 (Mono)
Headphone: None
Security (Lock): 1
Joystick (PC): None
Power: 1
Power Adapter: N/A