
ACER, INC.

V55LA-2

Device Type       Mainboard
Processor         CX 6X86/CX 6X86L/CX 6X86MX/AM K5/AM K6/Pentium/Pentium
                  MMX
Processor Speed   75/90/100/120/133/150/166/180/200/233MHz
Chip Set          Unidentified
Video Chip Set    Unidentified
Maximum Onboard   128MB (EDO supported)
Memory
Maximum Video     2MB
Memory
Cache             256/512/1024KB
BIOS              Acer
Dimensions        254mm x 218mm
I/O Options       Floppy drive interface, green PC connector, IDE
                  interfaces (2), parallel port, PS/2 mouse port, serial
                  ports (2), VGA port, riser slot, USB connector, line in,
                  wavetable connector, audio in  CD-ROM

[Image]

                                CONNECTIONS

  Purpose                     Location     Purpose             Location

  Ethernet/multimedia           CN1        CPU fan power         CN18
  connector

  Audio in  CD-ROM             CN2        Front panel           CN19
                                           connector

  USB connector                 CN5        VGA port              CN21

  Wavetable connector           CN6        Modem connector       CN22

  PS/2 mouse port               CN8        ATI media             CN23
                                           connector

  Audio connector               CN9        Line in               CN31

  Floppy drive interface        CN10       Green PC              JP15
                                           connector

  IDE interface 2               CN11       External              JP30
                                           battery

  IDE interface 1               CN12       IDE interface       JP48/pins
                                           LED                  1/3/5

  Serial port 1                 CN13       Power LED           JP48/pins
                                                                2/4/6

  Serial port 2                 CN14       Power on              JP50
                                           connector

  Parallel port                 CN17       Riser slot            SL1

  Note: The location of CN1 is unidentified.

                        USER CONFIGURABLE SETTINGS

               Function                    Label           Position

     Factory configured - do not          CN30          Unidentified
      alter

      BIOS type select Acer                 JP1        Pins 1 & 2 closed

      BIOS type select OEM                  JP1        Pins 2 & 3 closed

      LED select IDE LED only               JP2        Pins 2 & 3 closed

      LED select IDE & floppy               JP2        Pins 1 & 2 closed

      CN19/pins 19 & 20 supports           JP11        Pins 1 & 2 closed
      green PC

      UPS enabled                          JP16        Pins 1 & 2 closed

      UPS disabled                         JP16        Pins 2 & 3 closed

     Factory configured - do not          JP42          Unidentified
      alter

      On board sound enabled               SW2/5              Off

      On board sound disabled              SW2/5              On

      Password disabled                    SW2/6              On

      Password enabled                     SW2/6              Off

             SIMM CONFIGURATION

     Size          Bank 0        Bank 1

      8MB        (2) 1M x 36      None

     16MB        (2) 2M x 36      None

     16MB        (2) 1M x 36   (2) 1M x 36

     24MB        (2) 2M x 36   (2) 1M x 36

     32MB        (2) 4M x 36      None

     32MB        (2) 2M x 36   (2) 2M x 36

     40MB        (2) 4M x 36   (2) 1M x 36

     48MB        (2) 4M x 36   (2) 2M x 36

     64MB        (2) 8M x 36      None

     64MB        (2) 4M x 36   (2) 4M x 36

     72MB        (2) 8M x 36   (2) 1M x 36

     80MB        (2) 8M x 36   (2) 2M x 36

     96MB        (2) 8M x 36   (2) 4M x 36

     128MB       (2) 8M x 36   (2) 8M x 36

  Note: Board accepts EDO memory.

               CACHE CONFIGURATION

      Size            Bank 0            TAG

      256KB        (2) 32K x 32     Unidentified

      512KB        (2) 64K x 32     Unidentified

       1MB        (2) 128K x 32     Unidentified

                  CACHE JUMPER CONFIGURATION

        Size                 JP3                  JP4

        256KB          Pins 1 & 2 closed   Pins 1 & 2 closed

        512KB          Pins 1 & 2 closed   Pins 2 & 3 closed

         1MB           Pins 2 & 3 closed   Pins 2 & 3 closed

            VIDEO MEMORY CONFIGURATION

      Size            Bank 0           Bank 1

       1MB        (2) 256K x 16         None

       2MB        (2) 256K x 16    (2) 256K x 16

                       CPU SPEED SELECTION (CX 6X86)

    CPU       Clock    Multiplier     SW2/1    SW2/2     SW2/3     SW2/4
   speed     speed

  120MHz     50MHz         2x          On        On       On        Off

  150MHz     60MHz         2x          On       Off       On        Off

  166MHz     66MHz         2x          Off       On       On        Off

                      CPU SPEED SELECTION (CX 6X86L)

    CPU       Clock    Multiplier     SW2/1    SW2/2     SW2/3     SW2/4
   speed     speed

  120MHz     50MHz         2x          On        On       On        Off

  150MHz     60MHz         2x          On       Off       On        Off

  166MHz     66MHz         2x          Off       On       On        Off

                      CPU SPEED SELECTION (CX 6X86MX)

    CPU       Clock    Multiplier     SW2/1    SW2/2     SW2/3     SW2/4
   speed     speed

  166MHz     66MHz        2.5x         Off       On       On        On

  180MHz     60MHz         3x          On       Off       Off       On

  200MHz     66MHz         3x          Off       On       Off       On

                        CPU SPEED SELECTION (AM K5)

    CPU       Clock    Multiplier     SW2/1    SW2/2     SW2/3     SW2/4
   speed     speed

   75MHz     50MHz        1.5x         On        On       Off       Off

   90MHz     60MHz        1.5x         On       Off       Off       Off

  100MHz     66MHz        1.5x         Off       On       Off       Off

  120MHz     60MHz         2x          On       Off       On        Off

  133MHz     66MHz         2x          Off       On       On        Off

  166MHz     66MHz        2.5x         Off       On       On        On

                        CPU SPEED SELECTION (AM K6)

    CPU       Clock    Multiplier     SW2/1    SW2/2     SW2/3     SW2/4
   speed     speed

  166MHz     66MHz        2.5x         Off       On       On        On

  200MHz     66MHz         3x          Off       On       Off       On

  233MHz     66MHz        3.5x         Off       On       Off       Off

                        CPU SPEED SELECTION (INTEL)

    CPU       Clock    Multiplier     SW2/1    SW2/2     SW2/3     SW2/4
   speed     speed

   75MHz     50MHz        1.5x         On        On       Off       Off

   90MHz     60MHz        1.5x         On       Off       Off       Off

  100MHz     66MHz        1.5x         Off       On       Off       Off

  120MHz     60MHz         2x          On       Off       On        Off

  133MHz     66MHz         2x          Off       On       On        Off

  150MHz     60MHz        2.5x         On       Off       On        On

  166MHz     66MHz        2.5x         Off       On       On        On

  200MHz     66MHz         3x          Off       On       Off       On

                      CPU SPEED SELECTION (INTEL MMX)

    CPU       Clock    Multiplier     SW2/1    SW2/2     SW2/3     SW2/4
   speed     speed

  150MHz     60MHz        2.5x         On       Off       On        On

  166MHz     66MHz        2.5x         Off       On       On        On

  200MHz     66MHz         3x          Off       On       Off       On

         CPU TYPE SELECTION

       Type              JP7

  Single voltage       Closed

   Dual voltage         Open

                           CPU VOLTAGE SELECTION

      Voltage           V core             JP43               JP44

       3.3v              2.8v           Pins 2 & 3      Pins 2 & 3 closed
                                          closed

       3.3v              3.2v           Pins 2 & 3      Pins 1 & 2 closed
                                          closed

       3.5v              2.8v           Pins 1 & 2      Pins 2 & 3 closed
                                          closed

       3.5v              3.2v           Pins 1 & 2      Pins 1 & 2 closed
                                          closed

