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M725
PC CHIPS MAUNFACTURING, LTD.
M725
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Device Type
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Mainboard
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Processor
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Pentium II
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Processor Speed
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233/266/300/333MHz
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Chip Set
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Intel
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Maximum Onboard Memory
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384MB (EDO & SDRAM supported)
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Cache
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256/512KB (located on the Pentium II CPU)
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BIOS
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AMI
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Dimensions
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220mm x 220mm
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I/O Options
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32-bit PCI slots (3), floppy drive interface, IDE interfaces (2), parallel port, PS/2 mouse port, PS/2 mouse interface, serial ports (2), ATX power connector, AGP slot, 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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Sound and Game Header
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J3
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ATX power connector
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ATX
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ATX form card connector
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J4
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Audio in – CD-ROM
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CD1
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Speaker
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J5/pins 1, 3, 5, 7
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Audio in – CD-ROM
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CD2
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Power LED & keylock
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J5/pins 2, 4, 6, 8, 10
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Serial port 1
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COM1
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Turbo LED
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J5/pins 13 & 14
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Serial port 2
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COM2
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IDE interface LED
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J5/pins 15 & 16
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CPU fan power
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FAN1
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Reset switch
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J5/pins 17 & 18
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Floppy drive interface
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FDC1
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Green PC LED
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J5/pins 19 & 20
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IDE interface 1
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IDE1
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32-bit PCI slots
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PC1 - PC3
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IDE interface 2
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IDE2
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Parallel port
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PRN1
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Digital audio out
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J1
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PS/2 mouse interface
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PS1
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Digital audio in
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J2
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PS/2 mouse port
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PS2
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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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Sound pro enabled
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JP1
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Pins 2 & 3 closed
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Sound pro disabled
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JP1
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Pins 1 & 2 closed
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»
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Microphone type select standard
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JP2
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Open
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Microphone type select special
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JP2
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Closed
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»
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CMOS memory normal operation
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JP10
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Pins 1 & 2 closed
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CMOS memory clear
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JP10
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Pins 2 & 3 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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8 MB
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1 M x 64
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None
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None
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16 MB
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1 M x 64
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1 M x 64
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None
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16 MB
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2 M x 64
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None
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None
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24 MB
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1 M x 64
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1 M x 64
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1 M x 64
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32 MB
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2 M x 64
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2 M x 64
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None
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32 MB
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4 M x 64
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None
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None
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40 MB
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2 M x 64
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2 M x 64
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1 M x 64
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48 MB
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2 M x 64
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2 M x 64
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2 M x 64
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64 MB
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4 M x 64
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4 M x 64
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None
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64 MB
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8 M x 64
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None
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None
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80 MB
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4 M x 64
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4 M x 64
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2 M x 64
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96 MB
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4 M x 64
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4 M x 64
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4 M x 64
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128 MB
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8 M x 64
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8 M x 64
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None
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128 MB
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16 M x 64
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None
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None
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130 MB
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8 M x 64
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8 M x 64
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4 M x 64
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192 MB
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8 M x 64
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8 M x 64
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8 M x 64
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256 MB
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16 M x 64
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16 M x 64
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None
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320 MB
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16 M x 64
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16 M x 64
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8 M x 64
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384 MB
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16 M x 64
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16 M x 64
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16 M x 64
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DIMM VOLTAGE CONFIGURATION
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Voltage
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JP5A
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JP5B
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| »
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3.3v
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Pins 2 & 3 closed
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Pins 2 & 3 closed
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5v
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Pins 1 & 2 closed
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Pins 1 & 2 closed
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CACHE CONFIGURATION
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Note: The cache is located on the Pentium II CPU.
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CPU FREQUENCY SELECTION
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Frequency
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JP7
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66MHz
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Pins 2 & 3 closed
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CPU MULTIPLIER SELECTION
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Multiplier
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JP3A
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JP3B
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JP3C
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JP3D
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1.5x
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Open
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Open
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Closed
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Open
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2x
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Closed
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Closed
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Closed
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Closed
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2x
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Open
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Open
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Open
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Open
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2.5x
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Open
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Closed
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Closed
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Closed
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3x
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Closed
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Closed
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Open
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Closed
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3.5x
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Open
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Closed
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Open
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Closed
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4x
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Closed
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Closed
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Closed
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Open
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4.5x
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Open
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Closed
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Closed
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Open
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5x
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Closed
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Closed
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Open
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Open
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5.5x
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Open
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Closed
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Open
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Open
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6x
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Closed
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Open
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Closed
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Closed
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6.5x
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Open
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Open
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Closed
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Closed
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7x
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Closed
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Open
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Open
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Closed
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7.5x
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Open
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Open
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Open
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Closed
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8x
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Closed
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Open
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Closed
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Open
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