INTEL CORPORATION CLASSIC/PCI EXPANDABLE DESKTOP (I486 PROCESSOR/PCI) Processor 80486SX/SL80486SX/80486SX2/SL80486DX/80486DX2/SL80486DX2/ 80486DX4/Pentium Overdrive Processor 25/33/50(internal)/66(internal)/100(internal)MHz Speed Chip Set Intel Max. 64MB Onboard DRAM Cache 128/256KB BIOS AMI Dimensions 254mm x 218mm I/O Options Parallel port, serial ports (2), 32-bit PCI slots (3), floppy drive interface, IDE interface NPU Options None [Image] CONNECTIONS Purpose Location Purpose Location Serial port 1 CN1 IDE interface LED JP1 pins 10 - 13 Serial port 2 CN2 Turbo LED JP1 pins 16 - 17 IDE interface CN3 Chassis fan power JP2 pins 6 - 8 Parallel port CN4 Speaker JP2 pins 10 - 14 Floppy drive CN5 Turbo switch JP2 pins 16 - interface 17 Reset switch JP1 pins 1 & 32-bit PCI slots PC1 - PC3 2 Power LED & JP1 pins 4 - keylock 8 USER CONFIGURABLE SETTINGS Function Jumper Position » Factory configured - do not alter J1C1 N/A » Pentium Overdrive cache disabled J1C2 pins 1 & 2 closed Pentium Overdrive cache enabled J1C2 pins 2 & 3 closed » CPU type select SL-enhanced CPU J1C3 pins 1 & 2 installed closed CPU type select non SL-enhanced J1C3 pins 2 & 3 CPU installed closed » CPU type select non 80486SX CPU J1C4 pins 1 & 2 installed closed CPU type select 80486SX CPU J1C4 pins 2 & 3 installed closed » Password normal operation J9D1 pins 1 & 2 closed Password clear J9D1 pins 2 & 3 closed » Factory configured - do not alter J9D2 N/A » CMOS memory normal operation J9E1 pins 1 & 2 closed CMOS memory clear J9E1 pins 2 & 3 closed » Setup access enabled J9E2 pins 1 & 2 closed Setup access disabled J9E2 pins 2 & 3 closed » Flash BIOS write protect enabled J9E3 pins 1 & 2 closed Flash BIOS write protect disabled J9E3 pins 2 & 3 closed » Normal boot enabled J9E4 pins 1 & 2 closed Recovery boot enabled J9E4 pins 2 & 3 closed DRAM CONFIGURATION Size Bank 0 Bank 1 1MB NONE (1) 256K x 36 1MB (1) 256K x 36 NONE 2MB NONE (1) 512K x 36 2MB (1) 256K x 36 (1) 256K x 36 2MB (1) 512K x 36 NONE 3MB (1) 256K x 36 (1) 512K x 36 3MB (1) 512K x 36 (1) 256K x 36 4MB NONE (1) 1M x 36 4MB (1) 512K x 36 (1) 512K x 36 4MB (1) 1M x 36 NONE DRAM CONFIGURATION Size Bank 0 Bank 1 5MB (1) 256K x 36 (1) 1M x 36 5MB (1) 1M x 36 (1) 256K x 36 6MB (1) 512K x 36 (1) 1M x 36 6MB (1) 1M x 36 (1) 512K x 36 8MB (1) 1M x 36 (1) 1M x 36 8MB (1) 2M x 36 NONE 9MB (1) 256K x 36 (1) 2M x 36 9MB (1) 2M x 36 (1) 256K x 36 10MB (1) 512K x 36 (1) 2M x 36 10MB (1) 2M x 36 (1) 512K x 36 12MB (1) 1M x 36 (1) 2M x 36 12MB (1) 2M x 36 (1) 1M x 36 16MB NONE (1) 4M x 36 16MB (1) 2M x 36 (1) 2M x 36 16MB (1) 4M x 36 NONE 17MB (1) 256K x 36 (1) 4M x 36 17MB (1) 4M x 36 (1) 256K x 36 18MB (1) 512K x 36 (1) 4M x 36 18MB (1) 4M x 36 (1) 512K x 36 20MB (1) 1M x 36 (1) 4M x 36 20MB (1) 4M x 36 (1) 1M x 36 24MB (1) 2M x 36 (1) 4M x 36 24MB (1) 4M x 36 (1) 2M x 36 32MB NONE (1) 8M x 36 32MB (1) 4M x 36 (1) 4M x 36 32MB (1) 8M x 36 NONE 33MB (1) 256K x 36 (1) 8M x 36 33MB (1) 8M x 36 (1) 256K x 36 34MB (1) 512K x 36 (1) 8M x 36 34MB (1) 8M x 36 (1) 512K x 36 36MB (1) 1M x 36 (1) 8M x 36 36MB (1) 8M x 36 (1) 1M x 36 40MB (1) 2M x 36 (1) 8M x 36 40MB (1) 8M x 36 (1) 2M x 36 48MB (1) 4M x 36 (1) 8M x 36 48MB (1) 8M x 36 (1) 4M x 36 64MB (1) 8M x 36 (1) 8M x 36 CACHE CONFIGURATION Size Bank 0 Bank 1 TAG U1 128KB (4) 32K x 8 NONE (1) 32K x 8 (1) 16K x 1 256KB (4) 32K x 8 (4) 32K x 8 (1) 32K x 8 (1) 16K x 1 CACHE JUMPER CONFIGURATION Size J8A1 J8A2 128KB pins 2 & 3 closed pins 2 & 3 closed 256KB pins 1 & 2 closed pins 1 & 2 closed CPU SPEED CONFIGURATION Speed J1E1 J1E2 25MHz pins 2 & 3 closed pins 2 & 3 closed 33MHz pins 1 & 2 closed pins 1 & 2 closed 50iMHz pins 2 & 3 closed pins 2 & 3 closed 66iMHz pins 1 & 2 closed pins 1 & 2 closed 100iMHz pins 1 & 2 closed pins 1 & 2 closed CPU VOLTAGE CONFIGURATION Voltage J2A1 J2A2 J2A3 J2A4 3.3v pins 1 & 2 pins 1 & 2 pins 1 & 2 pins 1 & 2 closed closed closed closed 5v pins 2 & 3 pins 2 & 3 pins 2 & 3 pins 2 & 3 closed closed closed closed