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M-423 486 ISA Motherboard 

        - AMIBIOS ID String  40-0300-001437-00101111-121291-PC-CHIPS-8
        - AMIBIOS ID String  40-0030-001437-00101111-121291-PC-CHIP-F
        - 8-30 pin SIMM slots  (1-32meg FPM DRAM)
        - 2-32bit EISA slots (brown)
        - 4-16bit ISA slots (black:)
        - 1-8bit XT slot
        - 32k-256k CACHE support in 8-28pin sockets + 1 TAG RAM socket
        - AMI/AWARD Bios.
        - PC Chips 16329/8 chipset
        - Weitek 4167 co-processor support.
        - One PGA 239pin CPU socket which supports these processors:
          INTEL 80486SX/SX2,80486DX/DX2
        - Supports speeds of 20/25/33/40/50 MHz.
        - Manufactured by: PC-Chips and ILON USA Inc.