WD1004-27x is Winchester Disk Controller Boards manufactured by Western Digital.
| Part Number | Description |
|---|---|
| WD1004A-WXI | Winchester Disk Controller Boards |
| WD1002 | User Guide |
| WD1002-05 | Winchester Floppy Disk Controller |
| WD1002-SHD | Winchester Controller OEM Manual |
| WD1003 | User Guide |
The Seagate 238 hard disk drive unit is such a drive. Look in your drive manual to verify that you have an ST506/412 RLL drive or check with your dealer. Then check the drive manual for the drive parameters, such as those listed in Table 1-1.
