486EI V1.2 486 VESA Motherboard - 4-72 pin SIMM slots (1-256meg FPM DRAM) - 3-32bit VESA Local Bus slots - 8-16bit ISA slots - 128k-512k CACHE support in 8-32pin sockets - AMI Bios - SiS 85C406 chipset - DALLAS Real Time Clock - Supports 3.3v/5volt CPU's - 237pin ZIF CPU socket 3 which supports these processors: INTEL 80486SX/SX2,80486DX/DX2/DX4,P23T,Pentium Overdrive - Supports speeds of 25/33/40/50/66/80/100(internal)MHz. - Manufacterured by: ADVANCED INTEGRATION RESEARCH INC. =================================================================== Cache Config Size Bank 0 Bank 1 ----------------------------------------- 128k 4 - 32kx8 none 256k 4 - 32kx8 4 - 32kx8 512k 4 - 128kx8 none Cache Jumpers Size JC4 JC5 JC9 ------------------------------------- 128k 2-3 1-2 1-2 256k 1-2 1-2 4-5 512k 2-3 2-3 1-2 ==================================================================== CPU Config CPU Type J1 J2 J3 --------------------------------------------- 80486SX open open 2-3 P23T closed 2-3 1-2 80487SX closed 2-3 1-2 80486DX/DX2/DX4 closed 1-2 1-2 Pentium Overdrive closed 2-3 1-2 CPU Speed Config Speed JO1 JO2 JL2 ----------------------------------------- 25MHz closed closed open 33MHz open closed open 40MHz closed open closed 50iMHz closed closed open 50MHz open open closed 66iMHz open closed open 80iMHz closed open closed 100iMHz open closed open ==================================================================== CPU Voltage Config Voltage JP12 ------------------------ 3.3v 3-5,4-6 5v 1-3,2-4 ====================================================================