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Macintosh Quadra 950

The Macintosh Quadra 950 is a high-end 68040-powered desktop tower that was released in May 1992.


Specifications

Spec Details
Released/Discontinued May 1992/October 1995
CPU Motorola 68040 @33MHz
RAM Type: 16x 30-pin SIMM Slots
Standard: 8 or 16MB
Maximum: 256MB
Storage 3.5" SCSI
Standard: 230MB, 400MB, or 1.0GB
Graphics 1MB or 2MB VRAM
Audio Internal Speaker
Media Drives Auto-inject 3.5" 1.44MB Floppy Drive
2x Caddy-Loading CD-ROM Drive (Optional)
Expansion - 5x NuBus Slots
- 1x 040 PDS Slot
Networking AAUI Ethernet
Other I/O - 1x Apple Desktop Bus
- 2x Serial
- 1x DB25 SCSI
- 1x DB15 Video Out
- 2x RCA Jacks (Composite?)
- 1x Line In
- 1x Line Out
PRAM Battery 1/2AA Lithium
Firmware Old World
Minimum Mac OS System Software 7.0.1
Maximum Mac OS Mac OS 8.1

Resources

Link Details
Apple Macintosh Quadra 900 Service Manual
Apple Macintosh Quadra 900 Logic Board Schematic

Upgrades

SSD Upgrade

Check our page on SCSI SSD replacements for more info.


Common Faults & Maintenance

PRAM Battery Leaks

The 1/2AA Lithium PRAM battery in the 950 is very prone to leaking and should be removed. It does not need to be replaced on this model for the computer to operate.

Capacitors

The 950's logic board uses all solid-state capacitors, so you do not need to replace any if yours is working. The power supply may still need recapping.