ADAPTEC, INC.

AHA-3980W, AHA-3985W

Data Bus                  32-bit PCI
Card Size                 Three-quarter length, full-height card
Card Drives supported     Up to 30 Fast and Wide SCSI devices (model
                          AHA-3980W)

                          Up to 45 Fast and Wide SCSI devices (model
                          AHA-3985W)
Floppy drives supported   None


[Image]

                                CONNECTIONS

       Function           Location          Function           Location

  4-pin connector -          J3       68-pin SCSI channel         J8
  drive active LED                    C connector -
                                      internal (model
                                      AHA-3985W only)

  68-pin SCSI channel        J4       68-pin SCSI channel         J12
  A connector -                       A connector -
  internal                            external

  68-pin SCSI channel        J6
  B connector -
  internal

                        USER CONFIGURABLE SETTINGS

                  Function                      Label        Position

  »   Channel A bus is connected to one           J2           Open
      computer only

      Channel A bus is shared by two              J2          Closed
      computers

  »   Channel B bus is connected to one           J5           Open
      computer only

      Channel B bus is shared by two              J5          Closed
      computers

  »   Channel C bus is connected to one           J7           Open
      computer (AHA-3895W only)

      Channel C bus is shared by two              J7          Closed
      computers (AHA-3895W only)

  »   Host computer supports PCI interrupts      J10           Open
      A, B, C, & D

      Host computer supports PCI interrupts      J10          Closed
      A & B only

                       MISCELLANEOUS TECHNICAL NOTES

            Jumpers J2, J5 and J7 enable other adapter cards on different
            computers to share devices on channels

            A, B, and C (AHA-3895W only) with this adapter card. Device
            access is sequential.