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# ADAPTEC, INC.
AHA-3980, AHA-3985
Data Bus 32-bit PCI
Card Size Three-quarter length, full-height card
Card Drives Up to 14 Fast SCSI devices (model
supported AHA-3980)
Up to 21 Fast SCSI devices (model
AHA-3985)
Floppy drives None
supported
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Location | Function | Location |
|-------------------+----------+------------------+----------|
| 50-pin SCSI | J1 | 50-pin SCSI | J9 |
| channel A | | channel B | |
| connector - | | connector - | |
| external | | internal | |
|-------------------+----------+------------------+----------|
| 4-pin connector - | J6 | 50-pin SCSI | J10 |
| drive active LED | | channel C | |
| | | connector - | |
| | | internal (model | |
| | | AHA-3985 only) | |
|-------------------+----------+------------------+----------|
| 50-pin SCSI | J8 | | |
| channel A | | | |
| 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 | J3 | Open |
| | computer only | | |
|---+-------------------------------------+-------+----------|
| | Channel B bus is shared by two | J3 | Closed |
| | computers | | |
|---+-------------------------------------+-------+----------|
| » | Channel C bus is connected to one | J4 | Open |
| | computer (AHA-3985 only) | | |
|---+-------------------------------------+-------+----------|
| | Channel C bus is shared by two | J4 | Closed |
| | computers (AHA-3985 only) | | |
|---+-------------------------------------+-------+----------|
| » | Host computer supports PCI | J13 | Open |
| | interrupts A, B, C, & D | | |
|---+-------------------------------------+-------+----------|
| | Host computer supports PCI | J13 | Closed |
| | interrupts A & B only | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MISCELLANEOUS TECHNICAL NOTES |
|------------------------------------------------------------|
| Jumpers J2, J3 and J4 enable other adapter cards on |
| different computers to share devices on |
| |
| channels A, B, or C (model AHA-3985) with this |
| adapter card. Device access is sequential. |
+------------------------------------------------------------+