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# ADAPTEC, INC.
AHA-1740/AHA-1742A (VER. 2)
+------------------------------------------------------------+
|------------------------------------------------------------|
| Data bus: | 32-bit EISA |
|-------------------+----------------------------------------|
| Size: | Three-quarter length, Full-height card |
|-------------------+----------------------------------------|
| Hard drive | Up to fourteen SCSI devices |
| supported: | |
|-------------------+----------------------------------------|
| Floppy drives | 360KB, 720KB, 1.2MB, 1.44MB |
| supported: | |
+------------------------------------------------------------+
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Location |
|-----------------------------------------------+------------|
| 50-pin SCSI interface - external | CN1 |
|-----------------------------------------------+------------|
| 50-pin SCSI interface - internal | CN2 |
|-----------------------------------------------+------------|
| 34-pin control cable connector - floppy drive | CN3 |
|-----------------------------------------------+------------|
| Terminating resistor 1 | RN5 |
|-----------------------------------------------+------------|
| Terminating resistor 2 | RN6 |
|-----------------------------------------------+------------|
| Terminating resistor 3 | RN7 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Location | Setting |
|---------------------------------------+----------+---------|
| » | Factory configured - do not alter | JP1/A | N/A |
|---+-----------------------------------+----------+---------|
| » | Factory configured - do not alter | JP1/B | N/A |
|---+-----------------------------------+----------+---------|
| » | Factory configured - do not alter | JP1/C | N/A |
|---+-----------------------------------+----------+---------|
| » | Factory configured - do not alter | JP1/D | N/A |
|---+-----------------------------------+----------+---------|
| » | Floppy drive primary address | JP1/E | open |
| | select | | |
|---+-----------------------------------+----------+---------|
| | Floppy drive alternate address | JP1/E | closed |
| | select | | |
|---+-----------------------------------+----------+---------|
| » | Floppy drive interface enabled | JP1/F | closed |
|---+-----------------------------------+----------+---------|
| | Floppy drive interface disabled | JP1/F | open |
|---+-----------------------------------+----------+---------|
| » | TERMPWR supplied by host | JP2 | closed |
| | interface | | |
|---+-----------------------------------+----------+---------|
| | TERMPWR not supplied by host | JP2 | open |
| | interface | | |
+------------------------------------------------------------+