
ACER, INC.

ACERALTOS 9100B

Device Type                Mainboard
Processor                  Pentium II
Processor Speed            350/400MHz
Chip Set                   Intel 440BX
Video Chip Set             Unidentified
Maximum Onboard Memory     512MB (EDO supported)
Maximum Video Memory       2MB
Cache                      256/512KB (located on Pentium II CPU)
BIOS                       Acer
Dimensions                 305mm x 244mm
I/O Options                32-bit PCI slots (5), Ethernet 10BaseT
                           connector, floppy drive interface, IDE
                           interface, SCSI interface, Wide Ultra SCSI
                           interface, PS/2 mouse port, serial ports (2),
                           VGA port, USB connectors (2), ATX power
                           connector, CPU slot

[Image]

                                CONNECTIONS

  Purpose                Location      Purpose                 Location

  ATX power connector       ATX        VGA port                 CN14A

  Chassis fan power         C1         IDE interface             CN15

  Chassis fan power         C2         Ethernet 10BaseT          CN16
                                       connector

  Chassis fan power         C3         SCSI interface            CN17

  Serial port 1             CN1        Floppy drive              CN18
                                       interface

  Serial port 2             CN2        USB connector 1           CN19

  PS/2 mouse port           CN4        USB connector 2          CN19A

  Software shutdown         CN5        External SCSI             CN22
  for 420 power                        interface

  RDM connector             CN6        IDE interface LED         CN23

  RDM connector             CN7        SMM connector             CN24

  Soft off power            CN8        External SCSI             CN25
  supply                               interface

  Software shutdown         CN9        Chassis intrusion         CNN1
  for 200 power                        connector

  Power LED & keylock      CN10        32-bit PCI slots       PC1 - PC5

  Redundant power          CN11        CPU slot                  SL2
  supply connector

  NMI signal               CN12        3.3v power                 U1
  connector

  LED connector            CN13        3.3v power                 U5

  Parallel port            CN14

                         USER CONFIGURABLE SETTINGS

                 Function                     Label          Position

    Factory configured - do not alter         JP1          Pins 1 & 2
                                                              closed

    Factory configured - do not alter         JP2          Pins 1 & 2
                                                              closed

    Password disabled                         JP3          Pins 2 & 3
                                                              closed

     Password enabled                          JP3          Pins 1 & 2
                                                              closed

    5v standby enabled                        JP4          Pins 1 & 2
                                                              closed

     5v standby disabled                       JP4          Pins 2 & 3
                                                              closed

    On board video enabled                    JP7          Pins 1 & 2
                                                              closed

     On board video disabled                   JP7          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

                         SCSI TERMINATON SELECTION

                 Setting                                JP6

           Termination enabled                   Pins 1 & 2 closed

     Termination switchable through             Pins 2 & 3 closed
           SCSI select utility

[Image]

                                CONNECTIONS

  Purpose                 Location     Purpose                 Location

  CPU2 fan power             CN1       CPU1 fan power             CN3

  Thermal detection          CN2       Thermal detection          CN4
  connector 2                          connector 1

                         DIMM CONFIGURATION

     Size        Bank 0        Bank 1        Bank 2       Bank 3

     8MB       (1) 1M x 64      None          None         None

     16MB      (1) 2M x 64      None          None         None

     16MB      (1) 1M x 64  (1) 1M x 64       None         None

     24MB      (1) 2M x 64  (1) 1M x 64       None         None

     24MB      (1) 1M x 64  (1) 1M x 64   (1) 1M x 64      None

     32MB      (1) 4M x 64      None          None         None

     32MB      (1) 2M x 64  (1) 2M x 64       None         None

     32MB      (1) 1M x 64  (1) 1M x 64   (1) 1M x 64   (1) 1M x 64

     40MB      (1) 4M x 64  (1) 1M x 64       None         None

     48MB      (1) 4M x 64  (1) 2M x 64       None         None

     48MB      (1) 2M x 64  (1) 2M x 64   (1) 2M x 64      None

     64MB      (1) 2M x 64  (1) 2M x 64   (1) 2M x 64   (1) 2M x 64

     64MB      (1) 8M x 64      None          None         None

     64MB      (1) 4M x 64  (1) 4M x 64       None         None

     72MB      (1) 8M x 64  (1) 1M x 64       None         None

     80MB      (1) 8M x 64  (1) 2M x 64       None         None

     96MB      (1) 8M x 64  (1) 4M x 64       None         None

     96MB      (1) 4M x 64  (1) 4M x 64   (1) 4M x 64      None

                        DIMM CONFIGURATION (CON'T)

      Size          Bank 0        Bank 1         Bank 2         Bank 3

     128MB         (1) 16M x       None           None           None
                      64

     128MB        (1) 8M x 64   (1) 8M x 64       None           None

     128MB        (1) 4M x 64   (1) 4M x 64    (1) 4M x 64   (1) 4M x 64

     136MB         (1) 16M x    (1) 1M x 64       None           None
                      64

     144MB         (1) 16M x    (1) 2M x 64       None           None
                      64

     176MB         (1) 16M x    (1) 2M x 64    (1) 2M x 64   (1) 2M x 64
                      64

     192MB         (1) 16M x    (1) 8M x 64       None           None
                      64

     192MB        (1) 8M x 64   (1) 8M x 64    (1) 8M x 64       None

     256MB         (1) 16M x     (1) 16M x        None           None
                      64            64

     256MB        (1) 8M x 64   (1) 8M x 64    (1) 8M x 64   (1) 8M x 64

     272MB         (1) 16M x     (1) 16M x     (1) 1M x 64   (1) 1M x 64
                      64            64

     288MB         (1) 16M x     (1) 16M x     (1) 2M x 64   (1) 2M x 64
                      64            64

     320MB         (1) 16M x     (1) 16M x     (1) 4M x 64   (1) 4M x 64
                      64            64

     384MB         (1) 16M x     (1) 16M x      (1) 16M x        None
                      64            64             64

     512MB         (1) 16M x     (1) 16M x      (1) 16M x    (1) 16M x 64
                      64            64             64

  Note: Board accepts EDO memory.

                     CACHE CONFIGURATION

  Note: 256KB/512KB cache is located on the Pentium II CPU.

                            CPU SPEED SELECTION

    CPU        Clock     Multiplier     JP1A     JP1B     JP1C      JP1D
   speed      speed

  350MHz      100MHz        3.5x       1 & 2    2 & 3     2 & 3    1 & 2

  400MHz      100MHz         4x        1 & 2    1 & 2     1 & 2    2 & 3

  Note: Pins designated should be in the closed position.

