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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 single-ended drives only.

Figure 5. Setting terminator power jumpers

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Seagate ST12450W/WD manual Terminator power, J01