Up for sale is a rare MicroMac Technology MMXL99 LC-LCII-CC Processor Direct Slot (PDS) accelerator card. This vintage upgrade board was just pulled from a fully functional, running Macintosh Performa 405 system and is verified working.

This card is an excellent, period-correct upgrade to boost the performance of early 90s vintage Macintosh computers.

⚙️ Technical Specifications

• Manufacturer: MicroMac Technology

• Model: MMXL99 LC-LCII-CC (P/N: 632-10025-01)

• Processor: Motorola XC68030RC25B (Gold-top 68030 CPU)

• Math Coprocessor: Motorola MC68881RC20B FPU included for floating-point math acceleration

• Interface: Standard Macintosh LC-family PDS Slot

• Empty Socket: Features an open "68020" socket marking on the PCB (allows for flexible configuration options)

🖥️ Compatibility

Designed specifically for the following vintage Macintosh models:

• Macintosh LC

• Macintosh LC II

• Macintosh Color Classic (CC)

• Macintosh Performa 400 / 405 / 410 / 430

🧼 Condition & Notes

• Condition: Excellent physical and cosmetic condition.

• Testing: Pulled directly from a running, active system. Gold contacts are clean with no signs of corrosion or damage.

• Includes: Accelerator card only (as pictured). You may need to download the legacy MicroMac startup software/control panels depending on your system configuration.