22 | ST12450W/WD Installation Guide, Rev. B |
Terminator power
ST12450W drives may be configured in four different ways (see Figure 5); however, you usually will not need to change this option and should normally leave the drive configured as it was shipped from the factory. ST12450WD drives should be configured with a jumper connecting J01 pins 1 and 3 (and no jumper on J01 pins 2 and 4) as illustrated in Figure 5.
Power 
Connector
J4 J01
Pin 3 
J01
Pin 1
Pin 1 Pin 2
* Term. power from drive.
* Term. power from SCSI bus. Term. power to SCSI bus.
* Term. power to SCSI bus and drive.
* Valid for