1. | LED | Front panel LED signal, indicates drive activity. |
2. | SYN | Synchronous spindle synchronizing signal generated by host or drive |
3. | DLY | Asserted by host to enable Delayed Motor Start Option (motor starts at power on or after a delay of 12 seconds times drive ID). This and MTR are mutually exclusive options. |
4. | MTR | Asserted by host to enable Motor Start Option (enables starting motor via SCSI bus command). |