UNIDENTIFIED
H/FDC ADAPTER
| Card Type | Hard drive controller | 
| Hard Drives supported | Two IDE (AT) drives | 
| Floppy drives supported | Two 360KB, 720KB, 1.2MB, 1.44MB | 
| Data Bus | 16-bit ISA | 
| Card Size | Half-length, full-height | 
 
| CONNECTIONS | |||
| Function | Label | Function | Label | 
| 34-pin cable connector - floppy drive | CN1 | 2-pin connector - drive active LED | J1 | 
| 40-pin IDE(AT) connector | CN2 | ||
| USER CONFIGURABLE SETTINGS | |||
| Function | Label | Position | |
| » | One hard drive in system | J2 | Open | 
| Two hard drives in system | J2 | Closed | |
| » | IOCHRDY signal disabled | J3 | Open | 
| IOCHRDY signal enabled | J3 | Closed | |
| » | Host system acknowledges Interrupt status register | J4 | Pins 1 & 2 closed | 
| Host system ignores Interrupt status register | J4 | Pine 2 & 3 closed | |
| » | 300KPS for DP8473 enabled | J5 | Pins 1 & 2 closed | 
| 250KPS for DP8473 enabled | J5 | Pins 2 & 3 closed | |
| » | Proper precompensation value for DP8473 floppy drive enabled | J6 | Pins 2 & 3 closed | 
| Precompensation control for DP8473 floppy drive disabled | J6 | Pins 1 & 2 closed | |
| » | Floppy drive interface enabled | J7 | Open | 
| Floppy drive interface disabled | J7 | Closed | |
| » | IDE(AT) interface enabled | J8 | Open | 
| IDE(AT) interface disabled | J8 | Closed | |
| » | IDE primary address enabled | J9 | Pins 2 & 3 closed | 
| IDE secondary address enabled | J9 | Pins 1 & 2 closed | |