Vintage IBM PC AT 128KB/640KB Memory Expansion Board Card 62X0780 ISA NOS Style For Sale
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Vintage IBM PC AT 128KB/640KB Memory Expansion Board Card 62X0780 ISA NOS Style
Price: US $100.00
Original IBM Personal Computer AT 128KB/640KB Memory Expansion Card (16-Bit ISA)Remarkably clean, vintage IBM 128KB/640KB Memory Expansion Board, part number 62X0780. This authentic piece of early computing history was manufactured in mid-1986 (stamped AUG 27 1986 on the reverse side) and typically served to backfill conventional memory or provide extended memory on the IBM PC AT 5170 platform.Technical Configuration Details:
Bank 1 is fully populated with 18 high-quality socketed 64kx1 DRAM ICs, totaling 128 KB of conventional memory. This is used to flawlessly backfill the standard base RAM barrier up to the historical 640 KB mark.
Bank 0 consists of empty IC sockets, ready for you to expand into extended/expansion memory using standard 41256 style DRAM chips if desired.
Features the factory original physical dip-switch array and the authentic metallic rear mounting bracket.
