Nominal 16 MHz 68030 with integrated paged memory management unit and 68882 floating-point coprocessor; 0.5 KB L1 cache, no L2 cache or second processor
GPU
No integrated video output; a separately sold NuBus video card is required
Memory type
Eight 30-pin SIMM slots populated in groups of four, 120 ns or faster; Apple's support sheet certifies 1–32 MB with 256 KB, 1 MB or 4 MB modules. Larger third-party configurations are not represented as maker-supported; 256 KB ROM
Storage type
One or two 1.44 MB high-density floppy drives; optional 40–80 MB internal SCSI hard drives. Factory configurations shown are the 1 MB floppy-only system and Low End Mac's separately priced 1 MB/40 MB system; no 80 MB/RAM pair inferred
Expansion slots
Six NuBus slots, one occupied when a display video card is installed
Display
Screen
None built in
Connections
Ports
Headphone jack
Back ports
Two Apple Desktop Bus ports, DB-25 SCSI, printer and modem serial ports and stereo sound output; no built-in Ethernet or video socket
External displays
Requires a NuBus video card; available resolutions and colour depths depend on the card
Speakers
Built-in speaker and stereo 8-bit sound output
Design and power
Type
Compact
Weight
10.9 kg
Width × depth × height
475 × 366 × 140 mm
Operating system
macOS
Size and weight detail
Apple's reference dimensions are 5.5 × 18.7 × 14.4 inches and 24 lb; metric fields are rounded conversions
Power supply
Maximum 230 W; 90–270 V AC, 48–62 Hz, 1.9 A; 3.6 V lithium clock battery and soft power
In the box
Original System Software 6.0.1. Apple introduced the IIx on 19 September 1988; an independent model chronology records September availability, without an exact first-sale day
Configurations
Processor
Memory
Storage
Storage type
68030 16 MHz (Macintosh IIx)
1 MB
–
–
68030 16 MHz (Macintosh IIx)
1 MB
40 MB
Hard drive
Pros and cons
Pros
+High-density floppy drive reads Macintosh, DOS and other supported disk formats
+Six NuBus expansion slots
+Integrated memory management and floating-point hardware
Cons
−Requires a separate video card and display
−No built-in Ethernet
−Memory upgrades require matched groups of four SIMMs
