Macintosh Performa 405: Difference between revisions
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Revision as of 11:57, 10 February 2026
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| Macintosh Performa 405 | |
| Specifications | |
|---|---|
| Manufacturer | Apple Computer, Inc. |
| Type | Personal Computer |
| Released | April 12, 1993 |
| Discontinued | November 1, 1993 |
| Intro price | US$1,300 |
| CPU | Motorola 68030 @ 16 MHz |
| Memory | 4 MB RAM (expandable to 10 MB) |
| Storage | 80 MB SCSI hard drive, 1.44 MB floppy |
| Display | 512x384 (8-bit), 640x480 (4-bit) |
| Sound | 8-bit mono |
| Dimensions | 2.9" H x 12.2" W x 15.3" D |
| Weight | 8.8 lbs (4 kg) |
| OS / Firmware | System 7.0P - 7.6.1 |
| Predecessor | Performa 400 |
| Successor | Performa 450 |
| Model no. | M1700 |
The Macintosh Performa 405 is a consumer-oriented personal computer introduced by Apple Computer on April 12, 1993.[1] It is a rebrand of the LC II and is identical to the Performa 400, but shipped with 256 KB of VRAM instead of 512 KB and included a 12" Apple color monitor.
The Performa 405 uses a Motorola 68030 processor running at 16 MHz with a 16-bit data path. It shipped with 4 MB of RAM (expandable to 10 MB using 30-pin SIMMs) and an 80 MB SCSI hard drive.
Specifications
| Component | Specification |
|---|---|
| CPU | Motorola 68030 @ 16 MHz (16-bit data path) |
| FPU | None |
| System Bus | 16 MHz |
| ROM | 512 KB |
| RAM | 4 MB onboard (expandable to 10 MB via 30-pin SIMMs) |
| VRAM | 256 KB (upgradeable to 512 KB) |
| Storage | 80 MB SCSI hard drive, 1.44 MB floppy |
| Expansion | 1x LC PDS slot |
| Ports | ADB, SCSI, 2x Serial (Modem/Printer), Audio out |
| Display | 512x384 @ 8-bit, 640x480 @ 4-bit (256 KB VRAM) |
| Power | 90V-240V AC, 50 W max |
Relationship to LC II
The Performa 405 is identical to the LC II internally. The only difference from the Performa 400 is the reduced VRAM configuration (256 KB vs 512 KB).
General Maintenance
For detailed maintenance procedures including cleaning, PRAM battery management, and connector maintenance, refer to the Macintosh LC II General Maintenance page.
Troubleshooting
A troubleshooting guide addressing common issues is available on the Macintosh LC II Troubleshooting page.
Capacitor Replacement Guide
Capacitor replacement information for the logic board can be found on the Macintosh LC II Capacitor Replacement Guide page.