Advanced Logic Research ALR Power VEISA Memory Expansion Card 12407480 Rev E

Advanced Logic Research ALR Power VEISA Memory Expansion Card 12407480 Rev E

The Advanced Logic Research (ALR) 12407480 is a Power VEISA memory expansion card designed for ALR's VEISA-bus workstations and high-performance PCs of the early 1990s. VEISA — Advanced Logic Research's proprietary extension of the VESA/ISA bus architecture — allowed significantly greater memory addressability than standard ISA slots, making these expansion cards an essential upgrade path for ALR's Power-series desktop workstations. The card carries eight SIMM expansion slots and a set of controller ICs that manage the memory bank addressing and refresh logic.

Specifications & What's Included

• Manufacturer: Advanced Logic Research (ALR)
• Part Number: 12407480
• Revision: E/A
• Type: Power VEISA Memory Expansion Card
• Bus Interface: VEISA (Advanced Logic Research VESA Extended ISA)
• SIMM Slots: 8 (all empty — 0KB RAM installed per factory label)
• RAM Included: None — SIMMs must be supplied separately
• Form Factor: Full-length expansion card
• Bracket: Present (single-slot low-profile metal bracket)
• PCB: Green fiberglass, clean condition
• Manufacture Date: February 1992

Applications

The ALR 12407480 Power VEISA Memory Expansion Card was designed for Advanced Logic Research's Power-series workstations and servers, which used the company's proprietary VEISA bus to deliver performance competitive with early EISA machines. ALR was a major OEM supplier to corporate and government customers in the late 1980s and early 1990s, and their Power-series systems were widely deployed in engineering and scientific workstations running DOS, OS/2, and early versions of Windows NT. Memory expansion was critical in those systems because base configurations typically shipped with limited on-board RAM; cards like this one allowed system administrators to bring workstations up to the 16MB or 32MB ranges needed for demanding productivity and CAD applications. Today this card is primarily of interest to collectors and restorers maintaining ALR Power-series hardware. Because it arrives with no SIMMs installed, a buyer sourcing one for a restoration will need to supply period-correct 30-pin or 72-pin SIMMs compatible with the specific ALR motherboard.