ADAPTEC, INC.

AHA-1520B

Card Type               Hard drive controller card
Hard Drives supported   Up to 7 SCSI devices
Floppy drives supported None
Data Bus                16-bit ISA
Card Size               Three-quarter length, half-height card

[Image]

                                CONNECTIONS

        Function           Location          Function           Location

  4-pin connector -          CN1      50-pin SCSI connector       CN3
  drive active LED                    - external

  50-pin SCSI connector      CN2
  - internal

                        USER CONFIGURABLE SETTINGS

                 Function                    Label         Position

  »   Factory configured - do not alter      SW1/4       Unidentified

                          BIOS ADDRESS SELECTION

          Address               SW1/1           SW1/2           SW1/3

       DC000-DFFFFh              Off             Off             Off

       D8000-DBFFFh              On              Off             Off

       D4000-D7FFFh              Off             On              Off

       D0000-D3FFFh              On              On              Off

       CC000-CFFFFh              Off             Off             On

       C8000-CBFFFh              On              Off             On

         Inactive                Off             On              On

    BIOS PROM disabled           On              On              On

  Note: Do not use the inactive setting in Legacy/Non-Plug and Play
  systems. If you disable the BIOS PROM, you must run SCSISelect to
  synchronize the host adapter’s resource table with your new selection.
  Synchronization is automatically performed just by entering SCSISelect.