Macintosh Quadra 900
System 7.0.1–Mac OS 8.1 | |
CPU | Motorola 68040 @ 25 MHz |
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Memory | 4 MB, expandable to 256 MB (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) |
Mass | 36.8 pounds (16.7 kg) |
Predecessor | Macintosh IIfx |
Successor | Macintosh Quadra 950 |
Related | Macintosh Quadra 700 |
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.[1] 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 more powerful Quadra 950.
Hardware
The Quadra 900 was more expandable than the Quadra 700 but cost US$7,200.
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.[3]
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.[citation needed]
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.[4]
Specifications[2]
- 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
Timeline of Macintosh Centris, LC, Performa, and Quadra models, colored by CPU type |
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References
- ^ a b Webster, Bruce F. (December 1991). "Macintosh Quadras - Power But No Pizzazz". Macworld. Vol. 8, no. 12. pp. 140–147.
- ^ a b c "Macintosh Quadra 900: Technical Specifications". Apple.
- ISBN 0-7645-4040-8.
- ^ "Quadra 900: Technical Specifications". Apple.