ARNET CORPORATION

SYNCOM/386, SYNCOM/386I

Card Type              Serial
Processor              80386SX
Processor Speed        25MHz
Chip Set               Zilog/AMD
Maximum Onboard Memory 5MB RAM
I/O Options            Serial ports (4)
Data Bus               16-bit ISA

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                                CONNECTIONS

          Function            Label            Function            Label

  Four-port daughterboard      J1      Two-port daughterboard       J2
  header                               header

                        USER CONFIGURABLE SETTINGS

                  Setting                      Label         Position

  »   Fast Select enabled                       JP1          Pins 2 & 3
                                                              closed

      Fast Select disabled                      JP1          Pins 1 & 2
                                                              closed

                             BASE I/O ADDRESS

     Setting          SW1/1         SW1/2         SW1/3         SW1/4

         03Ch           On            On            On            On

         07Ch           On            On            On           Off

         0BCh           On            On           Off            On

         0FCh           On            On           Off           Off

         13Ch           On           Off            On            On

         17Ch           On           Off            On           Off

         1BCh           On           Off           Off            On

         1FCh           On           Off           Off           Off

         23Ch          Off            On            On            On

         27Ch          Off            On            On           Off

         2BCh          Off            On           Off            On

         2FCh          Off            On           Off           Off

  »      33Ch          Off           Off            On            On

         37Ch          Off           Off            On           Off

         3BCh          Off           Off           Off            On

         3FCh          Off           Off           Off           Off

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                                CONNECTIONS

        Function           Label             Function             Label

  V.35 or V.24 serial       CN1      Daughterboard header           J1
  ports via DB-37

            Note: Serial ports are provided via included adapter cable.

                           PORT 1 TYPE

  Setting      JP1        JP2        JP3        JP4       JP5

   V.35       1 & 2      1 & 2      1 & 2      1 & 2     1 & 2

   V.24       2 & 3      2 & 3      2 & 3      2 & 3     2 & 3

            Note: Pins designated are in the closed position.

                           PORT 2 TYPE

  Setting      JP6        JP7        JP8        JP9       JP10

   V.35       1 & 2      1 & 2      1 & 2      1 & 2     1 & 2

   V.24       2 & 3      2 & 3      2 & 3      2 & 3     2 & 3

            Note: Pins designated are in the closed position.

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                                CONNECTIONS

         Function            Label            Function            Label

  V.35 or V.24 serial         CN1      Daughterboard header         J2
  ports via DB-62

  Daughterboard header         J1

            Note: Serial ports are provided via included adapter cable.

                           PORT 1 TYPE

  Setting      JP1        JP2        JP3        JP4       JP5

   V.35       1 & 2      1 & 2      1 & 2      1 & 2     1 & 2

   V.24       2 & 3      2 & 3      2 & 3      2 & 3     2 & 3

            Note: Pins designated are in the closed position.

                           PORT 2 TYPE

  Setting      JP6        JP7        JP8        JP9       JP10

   V.35       1 & 2      1 & 2      1 & 2      1 & 2     1 & 2

   V.24       2 & 3      2 & 3      2 & 3      2 & 3     2 & 3

            Note: Pins designated are in the closed position.

                           PORT 3 TYPE

  Setting     JP11       JP12       JP13       JP14       JP15

   V.35       1 & 2      1 & 2      1 & 2      1 & 2     1 & 2

   V.24       2 & 3      2 & 3      2 & 3      2 & 3     2 & 3

            Note: Pins designated are in the closed position.

                           PORT 4 TYPE

  Setting     JP16       JP17       JP18       JP19       JP20

   V.35       1 & 2      1 & 2      1 & 2      1 & 2     1 & 2

   V.24       2 & 3      2 & 3      2 & 3      2 & 3     2 & 3

            Note: Pins designated are in the closed position.

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TWO-PORT BOARD

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FOUR-PORT BOARD

                                CONNECTIONS

         Function           Label             Function             Label

  X.21 serial ports via      CN1     Daughterboard header            J1
  DB-44

            Note: Serial ports are provided via included adapter cable.