
SOYO COMPUTER CO., LTD.

SY-5EH5

Device Type      Mainboard
Processor        CX 6X86/CX 6X86L/CX 686MX/AM K5/AM K6/

                 AM K6-2/Pentium/Pentium MMX
Processor Speed  90/100/120/133/150/166/180/200/233/250/266Hz
Chip Set         VIA VP3
Video Chip Set   None
Maximum Onboard  128MB (EDO & SDRAM supported)
Memory
Maximum Video    None
Memory
Cache            512KB
BIOS             Award
Dimensions       254mm x 218mm
I/O Options      32-bit PCI slots (3), floppy drive interface, IDE
                 interfaces (2), parallel port, PS/2 mouse interface,
                 serial ports (2), IR connector, USB connector, ATX power
                 connector, AGP slot, wake on LAN connector

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                  Location

  AGP slot                   AGP       Reset switch               J25A

  ATX power connector        ATX       Soft off power supply      J25B

  Parallel port              CN1       Turbo LED                  J25C

  Serial port 1              CN2       IDE interface LED          J25D

  Serial port 2              CN3       Power LED & keylock        J25E

  IDE interface 1            CN4       Speaker                    J25F

  IDE interface 2            CN5       CPU fan power              JP12

  Floppy drive interface     CN6       Wake on LAN connector      JP44

  PS/2 mouse interface       CN7       32-bit PCI slots         PC1  PC3

  IR connector               IR1       USB connector              USB

                        USER CONFIGURABLE SETTINGS

                Function                     Label           Position

      CPU voltage select auto                 JP4             Closed

      CPU voltage select manual               JP4              Open

     CMOS memory normal operation            JP5           Pins 1 & 2
                                                              closed

      CMOS memory clear                       JP5           Pins 2 & 3
                                                              closed

      CPU burst mode select interleave        JP22          Pins 1 & 2
                                                              closed

      CPU burst mode select linear            JP22          Pins 2 & 3
                                                              closed

              SIMM CONFIGURATION

         Size                  Bank 0

          8MB                (2) 1M x 36

         16MB                (2) 2M x 36

         32MB                (2) 4M x 36

         64MB                (2) 8M x 36

            Note: Board accepts EDO memory.

             DIMM CONFIGURATION

     Size          Bank 1        Bank 2

      8MB        (1) 1M x 64      None

     16MB        (1) 2M x 64      None

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

     24MB        (1) 2M x 64   (1) 1M x 64

     32MB        (1) 4M x 64      None

              DIMM CONFIGURATION (CONT)

       Size            Bank 1            Bank 2

       32MB          (1) 2M x 64       (1) 2M x 64

       40MB          (1) 4M x 64       (1) 1M x 64

       48MB          (1) 4M x 64       (1) 2M x 64

       64MB          (1) 8M x 64          None

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

       72MB          (1) 8M x 64       (1) 1M x 64

       80MB          (1) 8M x 64       (1) 2M x 64

       96MB          (1) 8M x 64       (1) 4M x 64

      128MB         (1) 16M x 64          None

      128MB          (1) 8M x 64       (1) 8M x 64

      136MB         (1) 16M x 64       (1) 1M x 64

      144MB         (1) 16M x 64       (1) 2M x 64

      160MB         (1) 16M x 64       (1) 4M x 64

      192MB         (1) 16M x 64       (1) 8M x 64

      256MB         (1) 16M x 64      (1) 16M x 64

            Note: Board accepts EDO & SDRAM memory.

                        DIMM VOLTAGE CONFIGURATION

               Voltage                                JP37

                  3.3v                     Pins 1 & 3, 2 & 4 closed

                    5v                      Pins 3 & 5, 4 & 6 closed

                       DIMM FREQUENCY CONFIGURATION

         Frequency                   JP9                    JP10

         SDRAM = CPU         Pins 2 & 3 closed       Pins 1 & 2 closed

          SDRAM = AGP         Pins 1 & 2 closed       Pins 2 & 3 closed

              CACHE CONFIGURATION

      Size          Bank 0           TAG

     512KB        (1) 64K x 64   (1) 16K x 8

                        CPU SPEED SELECTION (CX 6X86)

   CPU     Clock   Multiplier   SW1/1   SW1/2   SW1/3   SW1/4   SW1/5   SW1/6
  speed    speed

  150MHz   60MHz       2x        On      Off     Off     On     Off     Off

  166MHz   66MHz       2x        On      Off     Off    Off     Off     Off

  200MHz   75MHz       2x        On      Off     Off    Off      On     Off

                        CPU SPEED SELECTION (CX 6X86L)

   CPU     Clock   Multiplier   SW1/1   SW1/2   SW1/3   SW1/4   SW1/5   SW1/6
  speed    speed

  150MHz   60MHz       2x        On      Off     Off     On     Off     Off

  166MHz   66MHz       2x        On      Off     Off    Off     Off     Off

  200MHz   75MHz       2x        On      Off     Off    Off      On     Off

                       CPU SPEED SELECTION (CX 6X86MX)

   CPU     Clock   Multiplier   SW1/1   SW1/2   SW1/3   SW1/4   SW1/5   SW1/6
  speed    speed

  166MHz   60MHz      2.5x       On      On      Off     On     Off     Off

  200MHz   66MHz      2.5x       On      On      Off     On     Off     Off

  200MHz   75MHz       2x        On      Off     Off    Off      On     Off

  233MHz   75MHz      2.5x       On      On      Off    Off      On     Off

  233MHz   66MHz       3x        Off     On      Off     On     Off     Off

  266MHz   83MHz      2.5x       On      On      Off     On      On     Off

                         CPU SPEED SELECTION (AM K5)

   CPU     Clock   Multiplier   SW1/1   SW1/2   SW1/3   SW1/4   SW1/5   SW1/6
  speed    speed

  90MHz    60MHz      1.5x       Off     Off     Off     On     Off     Off

  100MHz   66MHz      1.5x       Off     Off     Off    Off     Off     Off

  120MHz   60MHz      1.5x       Off     Off     Off     On     Off     Off

  133MHz   66MHz       2x        On      Off     Off    Off     Off     Off

  166MHz   66MHz      2.5x       On      On      Off    Off     Off     Off

                         CPU SPEED SELECTION (AM K6)

   CPU     Clock   Multiplier   SW1/1   SW1/2   SW1/3   SW1/4   SW1/5   SW1/6
  speed    speed

  166MHz   66MHz      2.5x       On      On      Off    Off     Off     Off

  180MHz   66MHz       3x        Off     On      Off     On     Off     Off

  200MHz   66MHz       3x        Off     On      Off    Off     Off     Off

  233MHz   66MHz      3.5x       Off     Off     Off    Off     Off     Off

                        CPU SPEED SELECTION (AM K6 2)

   CPU     Clock   Multiplier   SW1/1   SW1/2   SW1/3   SW1/4   SW1/5   SW1/6
  speed    speed

  250MHz   100MHz     2.5x       On      On      Off    Off     Off      On

                         CPU SPEED SELECTION (INTEL)

   CPU     Clock   Multiplier   SW1/1   SW1/2   SW1/3   SW1/4   SW1/5   SW1/6
  speed    speed

  90MHz    60MHz      1.5x       Off     Off     Off     On     Off     Off

  100MHz   66MHz      1.5x       Off     Off     Off    Off     Off     Off

  120MHz   60MHz       2x        On      Off     Off     On     Off     Off

  133MHz   66MHz       2x        On      Off     Off    Off     Off     Off

  150MHz   60MHz      2.5x       On      On      Off     On     Off     Off

  166MHz   66MHz      2.5x       On      On      Off    Off     Off     Off

  180MHz   66MHz       3x        Off     On      Off     On     Off     Off

  200MHz   66MHz       3x        Off     On      Off    Off     Off     Off

                       CPU SPEED SELECTION (INTEL MMX)

   CPU     Clock   Multiplier   SW1/1   SW1/2   SW1/3   SW1/4   SW1/5   SW1/6
  speed    speed

  166MHz   66MHz      2.5x       On      On      Off    Off     Off     Off

  180MHz   66MHz       3x        Off     On      Off     On     Off     Off

  200MHz   66MHz       3x        Off     On      Off    Off     Off     Off

  233MHz   66MHz      3.5x       Off     Off     Off    Off     Off     Off

                        CPU VOLTAGE SELECTION

              Voltage                             JP30

               2.0v                               Open

               2.1v                        Pins 5 & 6 closed

               2.2v                        Pins 3 & 4 closed

               2.3v                     Pins 3 & 4, 5 & 6 closed

               2.4v                        Pins 7 & 8 closed

               2.5v                     Pins 5 & 6, 7 & 8 closed

               2.6v                     Pins 3 & 4, 7 & 8 closed

               2.7v                 Pins 3 & 4, 5 & 6, 7 & 8 closed

               2.8v                    Pins 1 & 2, 11 & 12 closed

               2.9v                     Pins 1 & 2, 5 & 6 closed

               3.0v                     Pins 1 & 2, 3 & 4 closed

               3.1v                 Pins 1 & 2, 3 & 4, 5 & 6 closed

               3.2v                     Pins 1 & 2, 7 & 8 closed

               3.3v                    Pins 1 & 2, 9 & 10 closed

               3.4v                 Pins 1 & 2, 3 & 4, 7 & 8 closed

               3.5v                    Pins 1 & 2, 11 & 12 closed

                          POWER SUPPLY SELECTION

          Type                      JP2                     JP6

             AT             Pins 2 & 3 closed       Pins 2 & 3 closed

             ATX             Pins 1 & 2 closed       Pins 1 & 2 closed

                       HOST BUS FREQUENCY SELECTION

   CPU host bus      AGP host     PCI hose        JP7            JP8
                       bus          bus

        66MHz        66MHz        33MHz       Pins 2 & 3        Open
                                                closed

        100MHz        66MHz        33MHz       Pins 1 & 2     Pins 2 & 3
                                                closed          closed

