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Macintosh Quadra 900

Personal computer by Apple Computer

Field	Value
name	Macintosh Quadra 900
family	Macintosh Quadra
developer	Apple Computer
image	Macintosh Quadra 900.jpg
image_size	240
release date
MSRP
CPU	Motorola 68040
CPUspeed	25 MHz
OS	System 7.0.1–Mac OS 8.1
RAM	4 MB, expandable to 256 MB
RAMtype	80 ns 30-pin SIMM
dimensions	Height: 18.6 in (47.25 cm)
Width: 8.9 in (22.6 cm)
Depth: 20.6 in (52.32 cm)
weight	36.8 lb
discontinued
predecessor	Macintosh IIfx
related	Macintosh Quadra 700
successor	Macintosh Quadra 950

Width: 8.9 in (22.6 cm) Depth: 20.6 in (52.32 cm)

The Macintosh Quadra 900 is a personal computer designed, manufactured, and sold by Apple Computer from October 1991 to May 1992. It was introduced alongside the Quadra 700 as the first computers in the Quadra family of Macintosh computers using the Motorola 68040 processor. It is also the first computer from Apple to be housed in an 18.6 inch (47 cm) tall mid-tower form factor, which by 1991 had gained momentum with PC manufacturers as a suitable design for departmental servers.

The Quadra 900 had a short lifespan; it was discontinued about six months after the first shipments in favor of the very similar Quadra 950; the 950 has a 33 MHz 68040 and improved graphics support.

Hardware

The Quadra 900 was more expandable than the Quadra 700 but cost US$7,200. The Quadra 900 could be upgraded to 256 megabytes of RAM,{{cite web

A new three-mode key-lock system on the front panel can be set to Off, On, and Secure. When set to Off, the machine can't be powered up. In Secure mode, the floppy drive and ADB port are disabled, offering a degree of local protection.{{cite book | chapter-url = https://archive.org/details/macworldmacsecre00pogu/page/483 | chapter-url-access = registration | author-link1 = David Pogue

System 7.0.1 was included and supports up to Mac OS 8.1. It is the earliest Macintosh model with the ability to run Mac OS 8.

Apple did sell a Quadra 950 logic board upgrade for $1899 USD, and a Workgroup Server 95 upgrade for $2499. With the Power Macintosh Upgrade Card installed, the Quadra 900 runs at 50 MHz and its name is reported in the System Profiler as the Power Macintosh 900.{{cite web

Specifications

Source:

Processor: 25 MHz Motorola 68040
Processor Cache: 8 KB Level 1
Bus Speed: 25 MHz
Hard Drive: 160 or 400 MB
Media drives: 1.44 MB floppy drive with one 5.25" SCSI drive bay available
Software: Mac OS 7.0.1 - 8.1
Logicboard RAM: None
Maximum RAM: 256 MB
Type of RAM: 30-pin SIMM (16 slots)
Minimum RAM Speed: 80 ns
Interleaving Support: No
Graphics: Integrated
Display Connection: DB-15
Graphics Memory: 1 MB standard, upgradable to 2 MB via 4 VRAM slots
Expansion Slots: 5 - NuBus, 1 - PDS
Hard Drive Bus: SCSI
Backup Battery: 3.6 V Lithium
Max Watts: 303 W
Ports: AAUI-15 Ethernet, 1 ADB, DB-25 SCSI, 2 Serial, 3.5-mm mono input jack, 3.5-mm stereo output jack

Timeline

References

Webster, Bruce F.. (December 1991). "Macintosh Quadras - Power But No Pizzazz".
Poole, Lon. (July 1992). "Quadra 950 - Apple accelerates the Quadra 900 and gives it a new name".
(June 1993). "MacWorld 9306 June 1993".

Info: Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

macintosh-quadra macintosh-towers 68k-macintosh-computers a/ux-capable-macintoshes macintosh-case-designs computer-related-introductions-in-1991 products-and-services-discontinued-in-1992

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