Macintosh Quadra 650
The Macintosh Quadra 650 is a 68040-based desktop computer that was released in October 1993.
Specifications
According to everymac.com.
| Spec | Details |
|---|---|
| Release Date | October 1991 |
| Discontinuation Date | September 1994 |
| Processor | Motorola 68040 @33MHz |
| RAM | 4x 72-pin SIMM Slots - 4 or 8MB Soldered - 132 or 136MB Maximum |
| Hard Disk | 3.5" SCSI - 230 or 500MB Standard |
| Graphics | 512K or 1MB VRAM |
| Audio | Internal Speaker |
| Internal Drives | - Manual inject 3.5" 1.44MB Floppy Drive - Optional 2X CD-ROM |
| Expansion | - 3x NuBus - 1x 040 PDS |
| Networking | AAUI Ethernet |
| Other I/O | - 2x ADB - 2x Serial - 1x DB25 SCSI - 1x DB15 Video Out - 1x Line Out - 1x Mic In |
| PRAM Battery | 1/2AA Lithium |
| Original Mac OS | System 7.1 |
| Maximum Mac OS | Mac OS 8.1 |
Upgrades
SSD Upgrade
Check our page on SCSI SSD replacements for more info.
Resources
 Service Manual |
|---|
Common Faults & Maintenance
PRAM Battery Leaks
The 1/2AA Lithium PRAM battery in the 650 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 650's logic board uses all solid-state capacitors and does not need to be recapped
Page last updated (MM/DD/YYYY): 09/24/2024
Update Reason: page rewritten
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