- also known as  F4DXL-UC4D   or   TK 8498F/GP 4N D24
        - BIOS ID string   40-E301-001116-00111111-121593-UMC498-H
        - 2-72 pin SIMM slots  (1-128meg FPM DRAM)
        - 4-30 pin SIMM slots
        - 3-32bit VESA slots
        - 7-16bit ISA slots
        - 128/256KB CACHE support in 8-28pin sockets + 1 TAG RAM socket
        - AMI 1993 Auto-Detect Flash-Rom Bios
        - UMC um8498f chipset
        - 237pin 80486 ZIF socket 3 which supports these processors:
          INTEL 80486SX/SX2,80486DX/DX2/DX4,P24D, Pentium Overdrive
          CYRIX CX486S(M6),CX486DX/DX2(M7)
          AMD AM486DXLT
Note: voltage regulator LT1085 must be installed on U24 to support 3.3volt cpus
        - Supports speeds of 25/33/40/50/66/75/100 MHz
        - Manufactured by: CHICONY ELECTRONICS CO., LTD

        - special thanks to Michel Weijts for taking the photos