Macintosh Quadra 900

The Apple Macintosh Quadra 900 is a personal computer that was designed, manufactured, and sold by Apple from 1991 to 1992 as part of the Macintosh Quadra series. The computer has been introduced on October 21, 1991, and its price started at $7200.

The new Quadra 900 features a 25 MHz Motorola 68040 processor, 4 MB of RAM, 160 MB or 400 MB hard drive, CD-ROM drive, and 1.44 MB Floppy drive.

This Macintosh has been discontinued on May 18, 1992.

Today Macintosh Quadra 900 is 31 years old!

Macintosh Quadra 900
Source: maccollection.net – Macintosh Quadra 900

Macintosh Quadra 900 Release Date and Original Price

IntroducedOctober 21, 1991
DiscontinuedMay 18, 1992
Model Identifier28
Model NumberM4200
Order NumberM4210LL/A (no hard drive)
M4230LL/A (160 MB hard drive)
Original Price$7,200
$8,500
ColorsPlatinum
Weight25.3 Ibs.
11.475 KG
Dimensions18.6” H x 8.9” W x 20.6” D
47.24 cm H x 22.6 cm W x 52.32 cm D

Tech Specs

Processor

ProcessorMotorola 68040
Processor Speed25 MHz
ArchitectureUnknown
Number of Cores1
System Bus25 MHz
Cache8 KB L1
CoprocessorIntegrated FPU

Storage & Media

Storage160 MB
400 MB
Media1 – CD-ROM
1 – 1.44 MB Floppy
1 – DDS-DC drive (Optional)

Memory

Built-in Memory4 MB
Maximum Memory256 MB
Memory Slots16 – 30 pin SIMMs
Minimum Speed80 ns
ROMUnknown
Interleaving SupportNo

Display

Built-in DisplayNone

Graphics

Graphics CardNone
Graphics Memory1 – 2 MB (via four sockets)
Display Connection1 – DB-15

Expansion

Expansion Slots5 – NuBus
1 – PDS (Cache Bus)
Hard Drive InterfaceSCSI

Software

Original OSSystem Software 7.0.1
Maximum OSMac OS 8.1
FirmwareMacintosh ROM

Connections

EthernetAAUI-15
ModemNone
ADB1
Serial2
SCSI1 – DB-25
Floppy PortNone
Audio In1 – 3.5-mm mono input jack
Audio Out1 – 3.5-mm stereo output jack
Display1 – DB-15

Power

Backup Battery3.6 V lithium
Maximum Continuous Power303 W
Line VoltageUnknown

References:
Apple Support – Macintosh Quadra 900: Technical Specifications

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