UNIDENTIFIED MB4D33L Processor 80386DX/TI486DLC/80486SX/80486DX/80486DX2 Processor Speed 20/25/33/40/50(internal)/50/66(internal)MHz Chip Set OPTI Max. Onboard DRAM32MB Cache 64/128/256KB BIOS AMI/Award Dimensions 254mm x 218mm I/O Options 32-bit VESA local bus slots (2) NPU Options None [Image] CONNECTIONS Purpose Location Purpose Location External battery JP4 Turbo switch JP18 Speaker JP15 Reset switch JP25 Power LED & keylock JP16 32-bit VESA local SL1 & SL2 bus slots Turbo LED JP17 USER CONFIGURABLE SETTINGS Function Jumper Position » I/O bus speed select CLKIN/4 JP5 Closed I/O bus speed select CLKIN/5 JP5 Open » Monitor type select color JP6 Closed Monitor type select monochrome JP6 Open » CMOS memory normal operation JP14 pins 1 & 2 closed CMOS memory clear JP14 pins 2 & 3 closed DRAM CONFIGURATION Size Bank 0 Bank 1 1MB (4) 256K x 9 NONE 2MB (4) 256K x 9 (4) 256K x 9 4MB (4) 1M x 9 NONE 5MB (4) 256K x 9 (4) 1M x 9 8MB (4) 1M x 9 (4) 1M x 9 16MB (4) 4M x 9 NONE 20MB (4) 1M x 9 (4) 4M x 9 32MB (4) 4M x 9 (4) 4M x 9 CACHE CONFIGURATION Size Bank 0 Bank 1 TAG 64KB (4) 8K x 8 (4) 8K x 8 (1) 8K x 8 128KB (4) 32K x 8 NONE (1) 8K x 8 256KB (4) 32K x 8 (4) 32K x 8 (1) 32K x 8 CACHE JUMPER CONFIGURATION Size JP1 JP2 JP3 64KB pins 2 & 3 pins 2 & 3 pins 2 & 3 closed closed closed 128KB pins 1 & 2 pins 1 & 2 pins 1 & 2 closed closed closed 256KB pins 1 & 2 pins 2 & 3 pins 1 & 2 closed closed closed CPU TYPE CONFIGURATION Type JP7 JP8 JP11 JP13 80386DX Open Open pins 2 & 3 Open closed TI486DLC Closed Closed pins 2 & 3 Open closed 80486SX Open Open pins 1 & 2 Closed closed 80486DX Open Open pins 1 & 2 Closed closed 80486DX2 Open Open pins 1 & 2 Closed closed CPU TYPE CONFIGURATION (80486 ONLY) Type JP9 JP10 80486SX pins 2 & 3 closed pins 2 & 3 closed 80486DX pins 1 & 2 closed pins 1 & 2 closed 80486DX2 pins 1 & 2 closed pins 1 & 2 closed CPU SPEED CONFIGURATION (80386 ONLY) Speed JP12 JP19 JP20 JP21 JP22 JP23 JP24 25MHz 1 & 2 Open 2 & 3 1 & 2 Open Closed Open 33MHz 1 & 2 Open 2 & 3 1 & 2 Open Open Closed 40MHz 1 & 2 Closed 2 & 3 1 & 2 Closed Open Open Note: Pins designated should be in the closed position. CPU SPEED CONFIGURATION (80486 ONLY) Speed JP12 JP19 JP20 JP21 JP22 JP23 JP24 20MHz 1 & 2 Open 1 & 2 1 & 2 Open Closed Closed 25MHz 1 & 2 Open 1 & 2 1 & 2 Open Closed Open 33MHz 1 & 2 Open 1 & 2 1 & 2 Open Open Closed 40MHz 2 & 3 Closed 2 & 3 2 & 3 Closed Closed Closed 50iMHz 1 & 2 Open 1 & 2 1 & 2 Open Closed Open 50MHz 2 & 3 Closed 2 & 3 2 & 3 Closed Closed Open 66iMHz 1 & 2 Open 1 & 2 1 & 2 Open Open Closed Note: Pins designated should be in the closed position. VESA SLOT ID CONFIGURATION Type jp26 jp27 80386 serials Open Closed 80486 serials Closed Open