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US 3486 MCA Bus Motherboard 

        - also known as US3486P03  IVN 1.0 dated  26 April 1993
        - AMIBIOS ID string  40-0000-428003-00101111-111192-UMC491F
        - 8-30 pin SIMM slots   (1-32meg FPM DRAM)
        - 1-32bit MCA Local Bus slots
        - 6-16bit ISA slots
        - 64-256k cache support in 8-28pin sockets + 1 TAG RAM sockets
        - AMI/Award Bios
        - C & T / OPTi Chipset
        - Supports 80386DX,80487SX/80486SX/DX/DX2 at 25/33/40/50/66MHz
        - Manufactured by: QDI (( thanks Richard ))