✓ VERIFIED

Macintosh Quadra 900

M4200 · 1991–1992 · tower

Specifications

Cpu: Motorola 68040 25 MHz (integrated FPU)
Gpu: Onboard video with 4 VRAM SIMM slots, 1 MB base (2 MB max)
Ram: max: 64 MB official; 256 MB with third-party SIMMs (16×30-pin slots in four banks, 80 ns) · base: 4 MB
Ports: NuBus slots ×5 · 040 PDS slot · DB-15 video (onboard) · ADB · SCSI (DB-25) · Serial ×2 (printer, modem) · Ethernet (AAUI-15) · Microphone in · Audio out (stereo)
Display: None built in; onboard video with 1 MB VRAM (2 MB max) drives 512×384 up to 1152×870
Storage: base: 160 MB SCSI HDD · options: 400 MB SCSI HDD · Floppy-only configuration · 1.44 MB auto-inject floppy · Front 5.25" bay for CD-ROM or tape
Os Support: latest: Mac OS 8.1 · shipped: System 7.0.1
Release Price: $7,200

Variants

Storage

Floppy onlyM4210LL/A

160MB HDDM4230LL/A

400MB HDD

Upgrade paths

CPU

PowerPC 601 upgrade card via the 040 PDS slot (Apple 66 MHz, DayStar PowerPro 601 80 MHz) · Same DayStar-built PDS card family as the 700/800/950; DayStar also sold a slot-free adapter so an 040 accelerator could coexist.

MODERATE

RAM

64 MB official; 256 MB with third-party 30-pin SIMMs · Sixteen 30-pin slots in banks of four; fill banks with matched sets.

30-pin SIMMs are scarcer and pricier than 72-pin today

MODERATE

storage

Internal SCSI drives across three bays, or solid-state emulators

EASY

display

2 MB VRAM for 24-bit color; NuBus cards for extra displays · Five NuBus slots leave plenty of room.

EASY