COMPAQ COMPUTER CORPORATION DESKPRO XE 486 Processor 80486SX/80487SX/80486DX/ODP486SX/80486DX2 Processor Speed 25/33/50(internal)/66(internal)MHz Chip Set Compaq Max. Onboard 32MB DRAM Cache 64/256KB (on external cache card) BIOS AMI Dimensions 330mm x 218mm I/O Options External cache card, floppy drive interface, IDE interface, parallel port, PS/2 mouse port, serial port, VGA port NPU Options None [Image] CONNECTIONS Purpose Location Purpose Location PS/2 mouse port CN1 Floppy drive interface CN7 Parallel port CN2 Speaker J1 Serial port CN3 Power LED & keylock J2 VGA port CN4 External battery J3 Video memory upgrade CN5 Riser card SL1 IDE interface CN6 External cache card SL2 USER CONFIGURABLE SETTINGS Function Jumper/Switch Position » Battery type select internal J4 pins 1 & 2 closed Battery type select external J4 pins 2 & 3 closed » On board video enabled SW502/1 Off On board video disabled SW502/1 On » Setup write protect disabled SW502/2 Off Setup write protect enabled SW502/2 On » Floppy drive select SW502/3 Off read/write » Floppy drive select read SW502/3 On only » Factory configured - do not SW502/4 Off alter » CMOS memory normal operation SW502/5 Off CMOS memory clear SW502/5 On » Flash BIOS write protect SW502/6 Off enabled Flash BIOS write protect SW502/6 On disabled DRAM CONFIGURATION Size Bank 0 Bank 1 Bank 2 Bank 3 1MB (1) 256K x NONE NONE NONE 36 2MB (1) 256K x (1) 256K x NONE NONE 36 36 2MB (1) 512K x NONE NONE NONE 36 3MB (1) 256K x (1) 256K x (1) 256K x NONE 36 36 36 3MB (1) 256K x (1) 512K x NONE NONE 36 36 4MB (1) 256K x (1) 256K x (1) 256K x (1) 256K x 36 36 36 36 4MB (1) 512K x (1) 512K x NONE NONE 36 36 4MB (1) 1M x 36 NONE NONE NONE 5MB (1) 256K x (1) 512K x (1) 512K x NONE 36 36 36 5MB (1) 256K x (1) 1M x 36 NONE NONE 36 6MB (1) 512K x (1) 512K x (1) 512K x NONE 36 36 36 6MB (1) 512K x (1) 1M x 36 NONE NONE 36 7MB (1) 256K x (1) 512K x (1) 512K x (1) 512K x 36 36 36 36 8MB (1) 512K x (1) 512K x (1) 512K x (1) 512K x 36 36 36 36 8MB (1) 1M x 36 (1) 1M x 36 NONE NONE 8MB (1) 2M x 36 NONE NONE NONE 9MB (1) 256K x (1) 1M x 36 (1) 1M x 36 NONE 36 9MB (1) 256K x (1) 2M x 36 NONE NONE 36 10MB (1) 512K x (1) 1M x 36 (1) 1M x 36 NONE 36 10MB (1) 512K x (1) 2M x 36 NONE NONE 36 12MB (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 NONE 12MB (1) 1M x 36 (1) 2M x 36 NONE NONE 13MB (1) 256K x (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 36 14MB (1) 512K x (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 36 16MB (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 16MB (1) 2M x 36 (1) 2M x 36 NONE NONE 17MB (1) 256K x (1) 2M x 36 (1) 2M x 36 NONE 36 18MB (1) 512K x (1) 2M x 36 (1) 2M x 36 NONE 36 DRAM CONFIGURATION (CON’T) Size Bank 0 Bank 1 Bank 2 Bank 3 20MB (1) 1M x 36 (1) 2M x 36 (1) 2M x 36 NONE 24MB (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 NONE 25MB (1) 256K x (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 36 26MB (1) 512K x (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 36 28MB (1) 1M x 36 (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 32MB (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 CPU TYPE CONFIGURATION Type SW500/1 SW500/2 SW500/3 SW500/4 80486SX-33 Off Off Off Off 80487SX-25 Off On On On ODP486SX-25/50 Off On On On ODP486SX-33/66 Off On On Off 80486DX-33 On Off On Off 80486DX2-50 On Off On On 80486DX2-66 On Off On Off