St31250W/Wd And St32550W/Wd Configuration; Figure 20. St31250W/Wd And St32550W/Wd Jumper Connectors - Seagate ST31250N Product Manual

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10.1.2

ST31250W/WD and ST32550W/WD configuration

Figure 20 illustrates ST31250W/WD and ST32550W/WD option select
jumper connectors.
DC Power
Pin 1
Connector
Pin 1
SCSI I/O
Connector
J5
SCSI ID = 0 (default)
SCSI ID = 1
SCSI ID = 2
SCSI ID = 3
SCSI ID = 4
SCSI ID = 5
SCSI ID = 6
SCSI ID = 7
SCSI ID = 8
SCSI ID = 9
SCSI ID = 10
SCSI ID = 11
SCSI ID = 12
SCSI ID = 13
SCSI ID = 14
SCSI ID = 15
Remote LED Connector
Spindle Sync
SSREF
Cable Connector

Figure 20. ST31250W/WD and ST32550W/WD jumper connectors

Barracuda 2LP Product Manual, Rev. D
ST31250W and
ST32550W
J1 Connector
Pin 1
J2
Pin 1 End
J4
Pin 1
J5
Pin 2
J4
Pin 1
SCSI ID bit 0
SCSI ID bit 1
SCSI ID bit 2
SCSI ID bit 3
Fault LED pin (–)
Vendor unique
SSREF (+)
spindle sync
Unit Active
LED pin (–)
Enable SCSI
terminator*
Ground
+5V
No connection
Reserved
*ST31250W and ST32550W only (internal
termination is not available on ST31250WD
and ST32550WD drives).
Cathode (–)
Anode (+)
Reserved
Disable SCSI Parity
Write Protect
Enable Motor Start
Delay Motor Start
ST31250WD and
Pin 2
ST32550WD
J1 Connector
Pin 4
Pin 1
Pin 3
J1
Pin 1
ST31250W and
ST32550W Pin 6 Pin 2
Term. power from
drive (default)
Term. power to
SCSI bus
Term. power from
SCSI bus
Term. power to
SCSI bus and drive
Enable SCSI
terminator (default)
J1
Pin 4
Pin 2
ST31250WD and
ST32550WD Pin 1 Pin 3
Term. power to
SCSI Bus (default)
(front view of J4)
Pin 1
J2
Pin 2
Pin 1