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AHA-1740A, AHA-1742A

Data bus: 32-bit, EISA
Size: Full-length, full-height card
Hard drive supported: Up to seven SCSI devices
Floppy drives supported: Two 360KB, 720KB, 1.2MB, or 1.44MB drives

CONNECTIONS
Function Location
50-pinSCSI connector - external CN1
50-pinSCSI connector - internal CN2
34-pin control cable connector - floppy drive CN3
4-pin connector - drive active LED CN4

 
USER CONFIGURABLE SETTINGS
Function Location Setting
Floppy drive enabled J6/umper 1 closed
     Floppy drive disabled J6/umper 1 open
Floppy drive port address is 3F0-3F7h J6/umper 2 open
     Floppy drive port address is 370-377h J6/umper 2 closed

 

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 supported: Up to seven SCSI devices
Floppy drives supported: Two 360KB, 720KB, 1.2MB, or 1.44MB drives

CONNECTIONS
Function Location
4-pin connector - drive active LED J1
34-pin control cable connector - floppy drive (optional) J2
50-pin SCSI Channel A connector – internal J3
50-pin SCSI Channel B connector - internal (optional) J5
50-pin SCSI Channel A connector – external J6

 
USER CONFIGURABLE SETTINGS
Function Location Setting
Floppy drive enabled J4 closed
     Floppy drive disabled J4 open
Note: Jumper J4 is only present on those boards with a floppy drive.

 

AHA-2742W, AHA-2744W

Data bus: 32-bit EISA
Size: Three/quarter-length, full-height card
Hard drive supported: Up to fifteen SCSI devices
Floppy drives supported: Two 360KB, 720KB, 1.2MB, or 1.44MB drives

CONNECTIONS
Function Location
4-pin connector - drive active LED J2
34-pin floppy drive connector J3
68-pin wide SCSI connector - internal J4
50-pin SCSI connector - internal J5
68-pin wide SCSI connector - external J6

 
USER CONFIGURABLE SETTINGS
Function Location Setting
Floppy drive controller enabled J1 Closed
     Floppy drive controller disabled J1 Open

 
MISCELLANEOUS TECHNICAL NOTES
Only single-ended SCSI devices can be connected to 2742W.
Only two of the three SCSI connector can be used at any given time.

 
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