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PR5 PCI (REV. 1.0)
ABIT COMPUTER CORPORATION
PR5 PCI (REV. 1.0)
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Processor
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CX M1/AM K5/Pentium
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Processor Speed
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75/90/100/120/133/150/166/200MHz
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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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128MB (EDO supported)
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Maximum Video Memory
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None
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Cache
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256/512KB
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BIOS
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Award
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Dimensions
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330mm x 218mm
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I/O Options
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32-bit PCI slots (3), floppy drive interface, green PC connector, IDE interfaces (2), parallel port, PS/2 mouse port, serial ports (2), cache slot, IR connector, USB connector
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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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Serial port 1
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CN1
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Reset switch
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J6 pins 1 & 2
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Serial port 2
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CN2
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Green PC connector
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J6 pins 6 & 7
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Parallel port
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CN3
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Turbo LED
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J6 pins 8 & 9
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Floppy drive interface
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CN4
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Speaker
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J6 pins 11 - 14
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IDE interface 2
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CN5
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Power LED & keylock
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J6 pins 16 - 20
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IDE interface 1
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CN6
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IR connector
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JP2
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USB connector
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CN7
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Chassis fan power
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JP9
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PS/2 mouse port
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J4
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32-bit PCI slots
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PC1 - PC3
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IDE interface LED
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J5
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Cache slot
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SL1
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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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»
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Factory configured - do not alter
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DS8
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Off
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»
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CMOS memory normal operation
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JP3
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Pins 1 & 2 closed
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CMOS memory clear
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JP3
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Pins 2 & 3 closed
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»
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Flash BIOS voltage select 12v
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JP8
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Pins 2 & 3 closed
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Flash BIOS voltage select 5v
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JP8
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Pins 1 & 2 closed
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DRAM CONFIGURATION
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Size
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Bank 0
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Bank 1
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8MB
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(2) 1M x 32
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None
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16MB
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(2) 2M x 32
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None
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16MB
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(2) 1M x 32
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(2) 1M x 32
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24MB
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(2) 2M x 32
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(2) 1M x 32
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32MB
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(2) 4M x 32
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None
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32MB
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(2) 2M x 32
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(2) 2M x 32
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40MB
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(2) 4M x 32
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(2) 1M x 32
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48MB
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(2) 4M x 32
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(2) 2M x 32
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64MB
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(2) 8M x 32
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None
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64MB
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(2) 4M x 32
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(2) 4M x 32
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72MB
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(2) 8M x 32
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(2) 1M x 32
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80MB
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(2) 8M x 32
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(2) 2M x 32
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96MB
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(2) 8M x 32
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(2) 4M x 32
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128MB
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(2) 8M x 32
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(2) 8M x 32
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Note: Board accepts EDO memory. Banks are interchangeable. If using this configuration, DIMM sockets must be empty.
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DIMM CONFIGURATION
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Size
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Bank 2
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Bank 3
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8MB
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(1) 1M x 64
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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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16MB
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(1) 1M x 64
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(1) 1M x 64
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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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32MB
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(1) 4M x 64
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None
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DIMM CONFIGURATION (CON’T)
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Size
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Bank 2
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Bank 3
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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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40MB
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(1) 4M 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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64MB
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(1) 8M x 64
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None
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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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72MB
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(1) 8M 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) 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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128MB
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(1) 8M x 64
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(1) 8M x 64
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Note: Banks are interchangeable. If using this configuration, SIMM sockets must be empty.
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CACHE CONFIGURATION
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Size
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Bank 0
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SL1
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TAG
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256KB
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(2) 32K x 32
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Not installed
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(1) 32K x 8
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512KB
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(2) 32K x 32
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256KB module installed
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(1) 32K x 8
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CACHE JUMPER CONFIGURATION
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Size
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JP1
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256KB
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Open
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512KB
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Closed
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CPU SPEED SELECTION (CYRIX)
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CPU speed
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Clock speed
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Multiplier
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DS/1
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DS/2
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DS/3
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DS/4
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DS/5
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DS/6
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DS/7
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120MHz
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50MHz
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2x
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Off
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On
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On
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On
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Off
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Off
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Off
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133MHz
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55MHz
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2x
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Off
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On
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Off
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Off
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On
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Off
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Off
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150MHz
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60MHz
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2x
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Off
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On
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Off
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On
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On
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Off
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Off
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166MHz
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66MHz
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2x
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Off
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On
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On
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Off
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On
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Off
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Off
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CPU SPEED SELECTION (AMD)
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CPU speed
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Clock speed
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Multiplier
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DS/1
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DS/2
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DS/3
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DS/4
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DS/5
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DS/6
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DS/7
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75MHz
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50MHz
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1.5x
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Off
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Off
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On
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On
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Off
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Off
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Off
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90MHz
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60MHz
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1.5x
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Off
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Off
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Off
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On
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On
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Off
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Off
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100MHz
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66MHz
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1.5x
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Off
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Off
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On
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Off
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On
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Off
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Off
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100MHz
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55MHz
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1.5x
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Off
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Off
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Off
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Off
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On
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Off
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Off
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120MHz
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60MHz
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1.5x
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Off
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Off
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Off
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On
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On
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Off
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Off
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133MHz
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66MHz
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1.5x
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Off
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Off
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On
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Off
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On
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Off
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Off
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150MHz
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60MHz
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2x
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Off
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On
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Off
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On
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On
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Off
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Off
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166MHz
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66MHz
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2x
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Off
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On
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On
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Off
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On
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Off
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Off
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CPU SPEED SELECTION (INTEL)
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CPU speed
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Clock speed
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Multiplier
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DS/1
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DS/2
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DS/3
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DS/4
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DS/5
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DS/6
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DS/7
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75MHz
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50MHz
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1.5x
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Off
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Off
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On
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On
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Off
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Off
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Off
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90MHz
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60MHz
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1.5x
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Off
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Off
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Off
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On
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On
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Off
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Off
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100MHz
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66MHz
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1.5x
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Off
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Off
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On
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Off
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On
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Off
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Off
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120MHz
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60MHz
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2x
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Off
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On
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Off
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On
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On
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Off
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Off
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133MHz
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66MHz
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2x
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Off
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On
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On
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Off
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On
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Off
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Off
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150MHz
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60MHz
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2.5x
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On
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On
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Off
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On
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On
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Off
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Off
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166MHz
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66MHz
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2.5x
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On
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On
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On
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Off
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On
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Off
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Off
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200MHz
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66MHz
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3x
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On
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Off
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On
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Off
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On
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Off
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Off
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CPU VOLTAGE SELECTION
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Voltage
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VC/1
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VC/2
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VC/3
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VC/4
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VC/5
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VC/6
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VC/7
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VC/8
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2.5v
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Off
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Off
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Off
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Off
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On
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Off
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Off
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On
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2.7v
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Off
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Off
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Off
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On
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Off
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Off
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Off
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On
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2.83v
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Off
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Off
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On
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Off
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Off
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Off
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Off
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On
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| »
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3.38v
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Off
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On
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Off
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Off
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Off
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Off
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Off
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On
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3.52v
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On
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Off
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Off
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Off
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Off
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Off
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Off
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On
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