Seagate ST423451N/W/WD Computer Drive User Manual


 
Elite 23 Installation Guide, Rev. A 41
W/WD drives
Other applicable jumper options
Other option jumpers are available as illustrated below.
Figure 14. Additional jumper options
Immediate spinup (if the Start Command 
option jumper is disconnected)
Spinup delay equal to the SCSI Bus ID
multiplied by 12 seconds (if the Start 
Command option jumper is disconnected).
Spinup Delay Option (DS)
J4B
Start spindle according to the Spinup 
Delay option jumper.
Start spindle after the SCSI Bus sends 
a Start Unit command.
Start Command Option (ME)
Check the parity of data bytes read from 
the SCSI Bus.
Ignore parity check.
SCSI Bus Parity Check (PD)
Reserved
J01
J4B
J4A
Pin 1
Pin 1
Pin 1