Apple 820-0251 APPLE 820-0251 256K SIMM LOT OF 4

Description

The Apple 820-0251 refers to a package containing four individual 256 Kilobit (Kb) SIMM (Single In-line Memory Module) memory modules. These modules are specifically intended for use in older Apple Macintosh computers that employed SIMM technology for memory expansion. The capacity of 256Kb per module is extremely small by modern standards, indicating that these SIMMs are from the early era of personal computing, likely the late 1980s or early 1990s. These SIMMs would have been used to upgrade the base memory of Macintosh models that supported this type of expansion. The part number 820-0251 is essential for identifying compatibility with specific Macintosh models, as different machines required different types, densities, and configurations of SIMMs. A lot of four would typically be installed together to achieve a specific total memory configuration required by the system's motherboard. While obsolete for contemporary computing, these 256Kb SIMMs represent a foundational step in the evolution of computer memory. They provided the necessary RAM for early graphical user interfaces and applications on the Macintosh platform. Their inclusion in a lot of four suggests a common upgrade path or configuration for the targeted Apple systems of that period.

Condition: Refurbished