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MBX8440-OS
DATAEXPERT CORPORATION
MBX8440-OS
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Device Type
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Mainboard
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Processor
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Pentium II/Celeron/Mendocino
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Processor Speed
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233/266/300/333/350/400/450MHz
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Chip Set
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Intel 440BX
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Maximum Onboard Memory
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384MB (EDO & SDRAM supported)
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Audio Chip Set
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Yamaha
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Cache
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0/128/256/512KB (located on the CPU)
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BIOS
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Award
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Dimensions
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305mm x 180mm
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I/O Options
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32-bit PCI slots (4), floppy drive interface, green PC connector, IDE interfaces (2), parallel port, PS/2 mouse port, serial ports (2), IR connector, USB connectors (2), ATX power connector, AGP slot, line in, line out, microphone in, audio in - CD-ROMs (2)
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CONNECTIONS
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Purpose
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Location
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Purpose
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Location
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AGP slot
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AGP
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Chassis fan power
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FAN1
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ATX power connector
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ATX
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CPU fan power
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FAN2
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Game/MIDI port
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CN1
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IR connector
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J1
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Microphone in
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CN2
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Audio in - CD-ROM (Sony)
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J2
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Line in
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CN3
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Audio in - CD-ROM (Panasonic)
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J3
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Line out
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CN4
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Power LED & keylock
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J5/pins 1 - 5
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Serial port 2
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CN5
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IDE interface LED
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J5/pins 6 & 16
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Serial port 1
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CN6
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Green PC LED
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J5/pins 7 & 17
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Parallel port
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CN7
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Green PC connector
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J5/pins 8 & 18
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USB connector 1
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CN8
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Soft off power supply
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J5/pins 9 & 19
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USB connector 2
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CN9
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Reset switch
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J5/pins 10 & 20
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PS/2 mouse port
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CN10
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Speaker
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J5/pins 11 - 14
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IDE interface 2
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CN11
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Wake on LAN connector
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JS1
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IDE interface 1
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CN12
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Thermistor connector
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RT1
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Floppy drive interface
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CN13
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32-bit PCI slots
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PC1 - PC4
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DIMM CONFIGURATION
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Size
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Bank 0
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Bank 1
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Bank 2
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8MB
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(1) 1M x 64
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None
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None
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16MB
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(1) 2M x 64
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None
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None
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16MB
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(1) 1M x 64
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(1) 1M x 64
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None
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24MB
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(1) 2M x 64
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(1) 1M x 64
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None
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24MB
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(1) 1M x 64
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(1) 1M x 64
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(1) 1M x 64
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32MB
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(1) 4M x 64
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None
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None
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32MB
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(1) 2M x 64
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(1) 1M x 64
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(1) 1M x 64
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32MB
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(1) 2M x 64
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(1) 2M x 64
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None
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40MB
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(1) 4M x 64
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(1) 1M x 64
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None
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40MB
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(1) 2M x 64
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(1) 2M x 64
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(1) 1M x 64
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48MB
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(1) 4M x 64
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(1) 1M x 64
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(1) 1M x 64
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48MB
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(1) 4M x 64
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(1) 2M x 64
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None
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48MB
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(1) 2M x 64
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(1) 2M x 64
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(1) 2M x 64
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56MB
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(1) 4M x 64
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(1) 2M x 64
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(1) 1M x 64
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64MB
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(1) 8M x 64
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None
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None
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64MB
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(1) 4M x 64
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(1) 2M x 64
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(1) 2M x 64
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64MB
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(1) 4M x 64
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(1) 4M x 64
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None
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72MB
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(1) 8M x 64
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(1) 1M x 64
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None
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72MB
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(1) 4M x 64
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(1) 4M x 64
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(1) 1M x 64
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80MB
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(1) 8M x 64
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(1) 1M x 64
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(1) 1M x 64
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DIMM CONFIGURATION (CON'T)
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Size
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Bank 0
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Bank 1
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Bank 2
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80MB
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(1) 8M x 64
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(1) 2M x 64
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None
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80MB
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(1) 4M x 64
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(1) 4M x 64
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(1) 2M x 64
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88MB
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(1) 8M x 64
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(1) 2M x 64
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(1) 1M x 64
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96MB
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(1) 8M x 64
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(1) 2M x 64
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(1) 2M x 64
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96MB
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(1) 8M x 64
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(1) 4M x 64
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None
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96MB
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(1) 4M x 64
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(1) 4M x 64
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(1) 4M x 64
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104MB
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(1) 8M x 64
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(1) 4M x 64
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(1) 1M x 64
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112MB
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(1) 8M x 64
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(1) 4M x 64
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(1) 2M x 64
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128MB
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(1) 16M x 64
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None
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None
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128MB
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(1) 8M x 64
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(1) 4M x 64
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(1) 4M x 64
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128MB
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(1) 8M x 64
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(1) 8M x 64
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None
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136MB
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(1) 16M x 64
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(1) 1M x 64
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None
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136MB
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(1) 8M x 64
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(1) 8M x 64
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(1) 1M x 64
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144MB
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(1) 16M x 64
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(1) 1M x 64
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(1) 1M x 64
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144MB
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(1) 16M x 64
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(1) 2M x 64
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None
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144MB
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(1) 8M x 64
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(1) 8M x 64
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(1) 2M x 64
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152MB
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(1) 16M x 64
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(1) 2M x 64
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(1) 1M x 64
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160MB
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(1) 16M x 64
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(1) 2M x 64
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(1) 2M x 64
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160MB
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(1) 16M x 64
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(1) 4M x 64
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None
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160MB
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(1) 8M x 64
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(1) 8M x 64
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(1) 4M x 64
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168MB
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(1) 16M x 64
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(1) 4M x 64
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(1) 1M x 64
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176MB
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(1) 16M x 64
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(1) 4M x 64
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(1) 2M x 64
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192MB
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(1) 16M x 64
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(1) 4M x 64
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(1) 4M x 64
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192MB
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(1) 16M x 64
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(1) 8M x 64
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None
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192MB
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(1) 8M x 64
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(1) 8M x 64
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(1) 8M x 64
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200MB
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(1) 16M x 64
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(1) 8M x 64
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(1) 1M x 64
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208MB
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(1) 16M x 64
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(1) 8M x 64
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(1) 2M x 64
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224MB
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(1) 16M x 64
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(1) 8M x 64
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(1) 4M x 64
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256MB
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(1) 16M x 64
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(1) 8M x 64
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(1) 8M x 64
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384MB
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(1) 16M x 64
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(1) 16M x 64
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(1) 16M x 64
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Note: Board accepts EDO & SDRAM memory.
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CACHE CONFIGURATION
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Note: 256KB/512KB cache is located on the Pentium II CPU. 128KB cache is located on the Celeron 300A & 333 CPU.
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CPU SPEED SELECTION
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CPU speed
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Clock speed
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Multiplier
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JP2
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JP1A
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JP1B
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JP1C
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JP1D
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233MHz
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66MHz
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3.5x
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2 & 3
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Open
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Open
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Closed
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Open
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266MHz
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66MHz
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4x
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2 & 3
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Closed
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Closed
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Open
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Closed
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300MHz
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66MHz
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4.5x
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2 & 3
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Open
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Closed
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Open
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Closed
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300MHz
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100MHz
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3x
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1 & 2
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Closed
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Open
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Closed
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Open
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333MHz
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66MHz
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5x
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2 & 3
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Closed
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Open
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Open
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Closed
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350MHz
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100MHz
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3.5x
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1 & 2
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Open
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Open
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Closed
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Open
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400MHz
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100MHz
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4x
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1 & 2
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Closed
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Closed
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Open
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Closed
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450MHz
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100MHz
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4.5x
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1 & 2
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Open
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Closed
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Open
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Closed
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Note: Pins designated should be in the closed position.
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