
ELITEGROUP COMPUTER SYSTEMS, INC.

P5HX-A (VER. 1.0)

Processor            CX M1/Pentium
Processor Speed      75/90/100/120/133/150/166/200MHz
Chip Set             Intel
Video Chip Set       None
Maximum Onboard      256MB (EDO supported)
Memory
Maximum Video Memory None
Cache                256/512KB
BIOS                 Unidentified
Dimensions           330mm x 218mm
I/O Options          32-bit PCI slots (4), floppy drive interface, green PC
                     connector, IDE interfaces (2), parallel port, PS/2
                     mouse port, serial ports (2), cache slot, IR
                     connectors (2), USB connector, ATX power connector,
                     soft on/off power switch
NPU Options          None

[Image]

                                CONNECTIONS

  Purpose               Location      Purpose                 Location

  ATX power                ATX        Power LED &           J12 pins 11 -
  connector                           keylock                    15

  PS/2 mouse port          J3         Speaker               J12 pins 17 -
                                                                 20

  Serial port 1            J4         IDE interface LED          J13

  Serial port 2            J5         USB connector              J17

  Parallel port            J6         Chassis fan power          J18

  Green PC LED             J8         IR connector               J19
                                      (fast)

  Floppy drive             J9         IR connector               J20
  interface

  IDE interface 1          J10        Soft on/off power          J21
                                      switch

  IDE interface 2          J11        32-bit PCI slots        PC1 - PC4

  Green PC connector   J12 pins 4 &   Cache slot                 SL1
                            5

  Reset switch         J12 pins 9 &
                           10

                        USER CONFIGURABLE SETTINGS

               Function                    Label           Position

      Flash BIOS voltage select 12v        JP10        Pins 2 & 3 closed

      Flash BIOS voltage select 5v         JP10        Pins 1 & 2 closed

     CMOS memory normal operation         JP11        Pins 2 & 3 closed

      CMOS memory clear                    JP11        Pins 1 & 2 closed

      Flash BIOS normal operation          JP12        Pins 2 & 3 closed

      Flash BIOS recovery mode             JP12        Pins 1 & 2 closed

     Factory configured - do not          JP16          Unidentified
      alter

              DRAM 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

     128MB        (2) 16M x 36       None

     136MB        (2) 16M x 36   (2) 1M x 36

          DRAM CONFIGURATION (CONT)

      Size          Bank 0          Bank 1

     144MB        (2) 16M x 36   (2) 2M x 36

     160MB        (2) 16M x 36   (2) 4M x 36

     192MB        (2) 16M x 36   (2) 8M x 36

     256MB        (2) 16M x 36   (2) 16M x 36

  Note: Board accepts EDO memory.

                            CACHE CONFIGURATION

          Size                   Bank 0                     SL1

        256KB (A)                 None            256KB module installed

        256KB (B)             (2) 32K x 32             Not installed

        512KB (A)                 None            512KB module installed

        512KB (B)             (2) 32K x 32        256KB module installed

        512KB (C)             (2) 64K x 32             Not installed

  CACHE JUMPER CONFIGURATION

     Size            JP15

   256KB (A)         Open

   256KB (B)        Closed

   512KB (A)         Open

   512KB (B)        Closed

   512KB (C)         Open

                        CPU SPEED SELECTION (CYRIX)

  CPU speed      Clock       Multiplier       JP7        JP8       JP9
                 speed

   120MHz        50MHz           2x           Open      2 & 3    1 & 2, 3
                                                                   & 4

   133MHz        55MHz           2x           Open      2 & 3      Open

   150MHz        60MHz           2x           Open      2 & 3     3 & 4

   166MHz        66MHz           2x           Open      2 & 3     1 & 2

  Note: Pins designated should be in the closed position.

                        CPU SPEED SELECTION (INTEL)

  CPU speed       Clock       Multiplier       JP7       JP8        JP9
                 speed

    75MHz        50MHz           1.5x         1 & 2     1 & 2      1 & 2,
                                                                   3 & 4

    90MHz        60MHz           1.5x         1 & 2     1 & 2      3 & 4

   100MHz        66MHz           1.5x         1 & 2     1 & 2      1 & 2

   120MHz        60MHz            2x          1 & 2     2 & 3      3 & 4

   133MHz        66MHz            2x          1 & 2     2 & 3      1 & 2

  150MHz *       60MHz           2.5x         2 & 3     2 & 3      3 & 4

  166MHz *       66MHz           2.5x         2 & 3     2 & 3      1 & 2

   200MHz        66MHz            3x          2 & 3     1 & 2      1 & 2

  Note: Pins designated should be in the closed position. *If P55C is
  used, install U37.

                           CPU VOLTAGE SELECTION

     Voltage          JP1        JP2        JP3         JP4        JP5

        3.3v        1 & 2      1 & 2      1 & 2       1 & 2      1 & 2

         3.52v       3 & 4      3 & 4      3 & 4       3 & 4      3 & 4

       Intel P55C    1 & 2      2 & 3      2 & 3       2 & 3      2 & 3

  Note: Pins designated should be in the closed position.

