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# UNIDENTIFIED
IDE-4251AC
Data bus: 16-bit, ISA
Size: Half-length, full-height card
Hard drives supported: Two AT Interface (IDE) drives
Floppy drives supported: Two 360KB, 720KB, 1.2MB, or 1.44MB
Maximum heads/cyl.: 8 heads and 1024 cylinders
(IMG) IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Location |
|-------------------------------------------------+----------|
| 34-pin data cable connector-floppy drive | CN2 |
|-------------------------------------------------+----------|
| 40-pin IDE Interface (AT) control cable | CN4 |
| connector-internal | |
|-------------------------------------------------+----------|
| 4-pin connector-drive active LED | JP1 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Location | Setting |
|-------------------------------+--------------+-------------|
| » | Floppy drive enabled | JP5 | closed |
|---+---------------------------+--------------+-------------|
| | Floppy drive disabled | JP5 | open |
|---+---------------------------+--------------+-------------|
| » | Hard drive enabled | JP6 | closed |
|---+---------------------------+--------------+-------------|
| | Hard drive disabled | JP6 | open |
+------------------------------------------------------------+