IBM

Vintage IBM proprietary memory module, marked "65X5762ESD, IBM-14 PQ, D, 18643000DB" on three ceramic modules mounted on an edge-connector card. Non-standard form factor — this is not a generic 30/72-pin SIMM, and appears to be a specialty/proprietary memory card likely used in an older IBM PS/2, System/3x, or AS/400-era system. Sold as-is, untested, for parts, repair, or vintage IBM collection. Please research compatibility with your specific system before purchasing — exact source system unconfirmed. Buyers familiar with vintage IBM hardware may recognize the compatible system from the part number.