Up for sale is an authentic vintage Quadram Liberty-PC expanded memory board (PCB Part Number 01-8978-R1, Board 81-8978-R1 REV 1B, Copyright 1985 Quadram Corporation, Made in Japan).

Designed for the IBM PC (5150), PC XT (5160), and 8-bit compatible clones, the Liberty-PC provides hardware-switched Lotus/Intel/Microsoft Expanded Memory Specification (LIM EMS) support as well as conventional base memory backfill up to 640KB.

• Manufacturer: Quadram Corporation (Made in Japan)

• Model: Liberty-PC

• Part Numbers: 01-8978-R1 / 81-8978-R1 REV 1B (Serial: 07240079)

• Bus Interface: 8-bit ISA (Full-Length)

• Specification: LIM EMS 3.2 / 4.0 compatible (via driver)

• Installed Memory: 512 KB (8 Banks fully populated with 72× 64K×1 bit 150ns DRAM DIPs: 54× Fujitsu MB8264A-15 + 18× Mitsubishi M5K4164ANP-15)

• Expandability: Supports up to 2 MB when populated with 256K×1 (41256) DRAM ICs

• Configuration: Dual 8-position rocker DIP switch blocks (SW1 & SW2) for starting address, EMS page frame, and parity settings

• Clean vintage card in very good physical and cosmetic condition.

• Gold edge connector fingers are straight and clean with intact plating.

• All 72 DRAM sockets are clean with original chips firmly seated; no broken pins, bent leads, or capacitor damage.

• Card only; software driver diskette and manual are not included (standard Quadram QEMM / LIBERTY.SYS drivers available online via vintage driver archives).