Nominal 16 MHz 68030 with 32-bit data path, integrated PMMU and 68882 FPU; 0.5K L1 cache, no L2 or second processor. Original owner manual specifies 15.6672 MHz exact clock; nominal support-sheet rating retained
Memory type
Eight 30-pin SIMM slots in groups of four, 120 ns or faster; support sheet certifies 1–32 MB and 256K, 1 MB or 4 MB modules. Original manual describes 8 MB with then-current modules and future 128 MB expansion; limits depend on installed modules and software. 256K ROM
Storage type
Factory choices from original Apple technical procedures are 1 MB RAM with floppy only, 1 MB with 40 MB SCSI disk, or 4 MB with 80 MB SCSI disk; all have an FDHD high-density floppy drive. Original capacity units retained; floppy capacity is removable storage
Expansion slots
One 120-pin 32-bit 030 Direct Slot; optional monitor connection requires a compatible video card
Original owner manual specifies exact 60.1 Hz refresh
Connections
Ports
Headphone jack
Back ports
Two ADB ports, DB-19 external floppy, DB-25 SCSI, two RS-232/RS-422 serial ports and stereo mini-phone audio output; no built-in Ethernet or external video socket
Speakers
Apple Sound Chip supports four-voice wavetable synthesis and stereo sampling; mixed stereo through a monophonic internal speaker, stereo through external sound port
Keyboard and mouse
Choice of Apple Keyboard or Apple Extended Keyboard; ADB mouse, as described in original owner manual
Design and power
Type
All-in-one
Operating system
macOS
Size and weight detail
Maker 19.5 lb; 13.6 in height × 9.6 in width × 10.9 in depth, retained in original units
Power supply
Maximum 75 W, 120–240 V, 48–62 Hz, 0.63 A; 3.6 V lithium clock battery
In the box
Original system software 6.0.3. Maker introduction 19 January 1989 is not treated as exact first sale; earliest actual-sale month unresolved in bounded search, released year only
