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J-7LXA, J-7LXA/L
J-MARK COMPUTER CORPORATION
J-7LXA, J-7LXA/L
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Processor
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Pentium II
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Processor Speed
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200/233/266/300MHz
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Chip Set
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Intel
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Video Chip Set
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None
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Maximum Onboard Memory
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1GB (EDO & SDRAM supported)
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Maximum Video Memory
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None
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Cache
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256/512KB (located on Pentium II CPU)
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BIOS
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Award
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Dimensions
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305mm x 244mm
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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
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NPU Options
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None
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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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ATX power connector
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ATX
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IDE interface 1
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CN6
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AGP slot
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AGP
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IDE interface 2
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CN7
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Turbo switch
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C1
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Floppy drive interface
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CN8
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Power LED & keylock
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C2
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Serial port 2
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CN9
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Turbo LED
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C3
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CPU fan power
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FAN
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Reset switch
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C4
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Chassis fan power
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FAN1
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Speaker
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C5
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Chassis fan power
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FAN2
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Serial port 1
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CN1
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IDE interface LED
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FRNT2/pins 1 & 3
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Parallel port
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CN2
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Green PC connector
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FRNT2/pins 2 & 4
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PS/2 mouse port
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CN3
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Soft off power supply
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FRNT3
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USB connector 1
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CN4
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IR connector
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IR1
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USB connector 2
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CN5
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32-bit PCI slots
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PC1 – PC4
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USER CONFIGURABLE SETTINGS
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Function
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Label
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Position
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Flash BIOS voltage select 12v
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JERP1
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Pins 1 & 2 closed
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Flash BIOS voltage select 5v
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JERP1
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Pins 2 & 3 closed
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»
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CMOS memory normal operation
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RTC1
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Pins 2 & 3 closed
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CMOS memory clear
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RTC1
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Pins 3 & 4 closed
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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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Bank 3
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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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None
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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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None
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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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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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None
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64MB
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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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(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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None
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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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None
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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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None
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128MB
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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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(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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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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None
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256MB
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(1) 16M x 64
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(1) 16M x 64
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None
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None
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256MB
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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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(1) 8M x 64
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256MB
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(1) 32M x 64
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None
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None
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None
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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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None
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512MB
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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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(1) 16M x 64
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512MB
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(1) 32M x 64
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(1) 32M x 64
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None
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None
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768MB
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(1) 32M x 64
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(1) 32M x 64
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(1) 32M x 64
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None
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1024MB
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(1) 32M x 64
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(1) 32M x 64
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(1) 32M x 64
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(1) 32M 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.
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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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JP1/1
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JP1/2
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JP1/3
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JP1/4
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200MHz
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66MHz
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3.5x
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On
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On
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On
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Off
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233MHz
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66MHz
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4x
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On
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On
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Off
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Off
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266MHz
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66MHz
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4.5x
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On
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Off
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On
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On
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300MHz
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66MHz
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5x
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On
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Off
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Off
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On
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