COMPAQ COMPUTER CORPORATION DESKPRO EN Device Type Mainboard Processor Pentium II Processor Speed 266/300/333/350/400/450/500/550MHz Chip Set Intel Video Chip Set None Maximum Onboard 384MB (SDRAM supported) Memory Maximum Video None Memory Cache 512KB (located on Pentium II CPU) BIOS Unidentified Dimensions 254mm x 218mm I/O Options 32-bit PCI slots (4), riser slot, AGP slot, serial ports (2), parallel port, PS/2 mouse port, line in, line out, microphone in, headphone in, USB connectors (2), IDE interfaces (2), floppy drive interface, audio in – CD-ROM NPU Options None [Image] CONNECTIONS Purpose Location Purpose Location AGP slot AGP Microphone in CN7 Serial port CN1 Headphone in CN8 Serial port CN2 USB connector CN9 Parallel port CN3 USB connector CN10 PS/2 mouse port CN4 Chassis fan power P15 Line in CN5 Riser slot SL1 Line out CN6 USER CONFIGURABLE SETTINGS Function Label Position » CMOS memory normal operation E50 Pins 1 & 2 closed CMOS memory clear E50 Pins 2 & 3 closed » Password enabled SW1/1 Off Password disabled SW1/1 On Auxiliary power supply enabled, SW1/6 Off main power supply disabled Auxiliary & main power supply SW1/6 On enabled DIMM CONFIGURATION Size Bank 0 Bank 1 Bank 2 8MB (1) 1M x 64 None None 16MB (1) 2M x 64 None None 16MB (1) 1M x 64 (1) 1M x 64 None 24MB (1) 2M x 64 (1) 1M x 64 None 24MB (1) 1M x 64 (1) 1M x 64 (1) 1M x 64 32MB (1) 4M x 64 None None 32MB (1) 2M x 64 (1) 1M x 64 (1) 1M x 64 32MB (1) 2M x 64 (1) 2M x 64 None 40MB (1) 4M x 64 (1) 1M x 64 None 40MB (1) 2M x 64 (1) 2M x 64 (1) 1M x 64 48MB (1) 4M x 64 (1) 1M x 64 (1) 1M x 64 48MB (1) 4M x 64 (1) 2M x 64 None 48MB (1) 2M x 64 (1) 2M x 64 (1) 2M x 64 56MB (1) 4M x 64 (1) 2M x 64 (1) 1M x 64 64MB (1) 8M x 64 None None 64MB (1) 4M x 64 (1) 2M x 64 (1) 2M x 64 64MB (1) 4M x 64 (1) 4M x 64 None DIMM CONFIGURATION (CON’T) Size Bank 0 Bank 1 Bank 2 72MB (1) 8M x 64 (1) 1M x 64 None 72MB (1) 4M x 64 (1) 4M x 64 (1) 1M x 64 80MB (1) 8M x 64 (1) 1M x 64 (1) 1M x 64 80MB (1) 8M x 64 (1) 2M x 64 None 80MB (1) 4M x 64 (1) 4M x 64 (1) 2M x 64 88MB (1) 8M x 64 (1) 2M x 64 (1) 1M x 64 96MB (1) 8M x 64 (1) 2M x 64 (1) 2M x 64 96MB (1) 8M x 64 (1) 4M x 64 None 96MB (1) 4M x 64 (1) 4M x 64 (1) 4M x 64 104MB (1) 8M x 64 (1) 4M x 64 (1) 1M x 64 112MB (1) 8M x 64 (1) 4M x 64 (1) 2M x 64 128MB (1) 16M x 64 None None 128MB (1) 8M x 64 (1) 4M x 64 (1) 4M x 64 128MB (1) 8M x 64 (1) 8M x 64 None 136MB (1) 16M x 64 (1) 1M x 64 None 136MB (1) 8M x 64 (1) 8M x 64 (1) 1M x 64 144MB (1) 16M x 64 (1) 1M x 64 (1) 1M x 64 144MB (1) 16M x 64 (1) 2M x 64 None 144MB (1) 8M x 64 (1) 8M x 64 (1) 2M x 64 152MB (1) 16M x 64 (1) 2M x 64 (1) 1M x 64 160MB (1) 16M x 64 (1) 2M x 64 (1) 2M x 64 160MB (1) 16M x 64 (1) 4M x 64 None 160MB (1) 8M x 64 (1) 8M x 64 (1) 4M x 64 168MB (1) 16M x 64 (1) 4M x 64 (1) 1M x 64 176MB (1) 16M x 64 (1) 4M x 64 (1) 2M x 64 192MB (1) 16M x 64 (1) 4M x 64 (1) 4M x 64 192MB (1) 16M x 64 (1) 8M x 64 None 192MB (1) 8M x 64 (1) 8M x 64 (1) 8M x 64 200MB (1) 16M x 64 (1) 8M x 64 (1) 1M x 64 208MB (1) 16M x 64 (1) 8M x 64 (1) 2M x 64 224MB (1) 16M x 64 (1) 8M x 64 (1) 4M x 64 256MB (1) 16M x 64 (1) 8M x 64 (1) 8M x 64 384MB (1) 16M x 64 (1) 16M x 64 (1) 16M x 64 CACHE CONFIGURATION Note: 512KB cache is located on the Pentium II CPU. CPU SPEED SELECTION CPU Clock Multiplier SW1/1 SW1/2 SW1/3 SW1/4 speed speed 266MHz 66MHz 4x On On Off On 300MHz 66MHz 4.5x On Off Off On 333MHz 66MHz 5x Off On Off On 350MHz 100MHz 3.5x Off Off On On 400MHz 100MHz 4x On On Off On 450MHz 100MHz 4.5x On Off Off On 500MHz 100MHz 5x Off On Off On 550MHz 100MHz 5.5x Off Off Off Off [Image] CONNECTIONS Purpose Location Purpose Location Speaker P6 SCSI interface LED P29 Chassis fan power P8 32-bit PCI slots PC1 – PC4 Wake on LAN connector P9 [Image] CONNECTIONS Purpose Location Purpose Location ATX power connector ATX Floppy drive interface P10 Front panel connector P5 IDE interface 1 P20 Audio in – CD-ROM P7 IDE interface 2 P21