ALPHA RESEARCH CORPORATION
S455S
| 
 Data bus:  | 
 16-bit, ISA  | 
| 
 Size:  | 
 Full-length, full-height card  | 
| 
 Hard drive supported:  | 
 Up to seven SCSI drives  | 
| 
 Floppy drives supported:  | 
 360KB, 720KB, 1.2MB, or 1.44MB (2)  | 

| 
 CONNECTIONS  | |
| 
 Purpose  | 
 Location  | 
| 
 SCSI drive interface (50 pin) external  | 
 CN1  | 
| 
 SCSI drive interface (50 pin) internal  | 
 CN2  | 
| 
 Floppy drive interface  | 
 CN3  | 
| 
 Hard drive activity LED  | 
 JP1  | 
| 
 Speaker  | 
 JP2  | 
| 
 USER CONFIGURABLE SETTINGS  | |||
| 
 Function  | 
 Location  | 
 Setting  | |
| 
 »  | 
 Floppy drive enabled  | 
 JP3  | 
 closed  | 
| 
 
  | 
 Floppy drive disabled  | 
 JP3  | 
 open  | 
| 
 MISCELLANEOUS TECHNICAL NOTES  | 
| 
 This controller supports 256KB, 1MB, or 4MB fast page mode SIMM's , 80nsec or faster. All four SIMM sockets must be filled with the same size SIMM's for proper operation  |