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       # ADAPTEC, INC.
       
          AHA-2740T, AHA-2742, AHA-2742T, AHA-2740A,
       
          AHA-2742A, AHA-2740A-TWIN, AHA-2742A-TWIN
       
          +------------------------------------------------------------+
          |------------------------------------------------------------|
          | Data bus:         | 32-bit, EISA                           |
          |-------------------+----------------------------------------|
          | Size:             | Half-length, full-height card          |
          |-------------------+----------------------------------------|
          | Hard drive        | Up to seven SCSI devices               |
          | supported:        |                                        |
          |-------------------+----------------------------------------|
          | Floppy drives     | Two 360KB, 720KB, 1.2MB, or 1.44MB     |
          | supported:        | drives                                 |
          +------------------------------------------------------------+
       
   IMG IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          |                    Function                     | Location |
          |-------------------------------------------------+----------|
          | 4-pin connector - drive active LED              |    J1    |
          |-------------------------------------------------+----------|
          | 34-pin control cable connector - floppy drive   |    J2    |
          | (optional)                                      |          |
          |-------------------------------------------------+----------|
          | 50-pin SCSI Channel A connector - internal      |    J3    |
          |-------------------------------------------------+----------|
          | 50-pin SCSI Channel B connector - internal      |    J5    |
          | (optional)                                      |          |
          |-------------------------------------------------+----------|
          | 50-pin SCSI Channel A connector - external      |    J6    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |             Function              |  Location  |  Setting  |
          |-----------------------------------+------------+-----------|
          | ยป   | Floppy drive enabled        |     J4     |  closed   |
          |-----+-----------------------------+------------+-----------|
          |     | Floppy drive disabled       |     J4     |   open    |
          |------------------------------------------------------------|
          | Note: Jumper J4 is only present on those boards with a     |
          | floppy drive.                                              |
          +------------------------------------------------------------+