Installation and Setup Procedures
WD Scorpio ML160M
36
RELEASED 1/16/09 (WD CONFIDENTIAL)
2679-701205-A00
5.3
Jumper Settings
The WD Scorpio drive has a jumper block (J2) located next to the 44-pin connector on the
drive. You can jumper the WD Scorpio drive as either a single/master drive, slave drive, or
Cable Select drive.
Single Drive Mode (Default Setting)
If you are installing the drive as the only hard drive in the system, no jumper is required.
Cable Select (CSEL)
Place a jumper shunt on pins D-B to enable this option. When enabled, the drive address is 0
(Master) if CSEL is low, or 1 (Slave) if CSEL is high. This option requires special support in
your system hardware.
Do not install the CSEL jumper shunt when installing the drive in
systems that do not support the CSEL feature.
Cable Select jumpering requires several conditions:
Drives jumpered as CSEL
A CSEL cable must be used
The host must support CSEL
Dual Drive Mode
If you have a dual installation (two hard drives), you must designate one of the drives as the
slave drive. The jumper pins on the J2 connector need to be configured for the dual
installation.
Master Drive Mode
– To designate the drive as the master, remove all jumpers.
Slave Drive Mode
– To designate the drive as the slave, place a jumper shunt on pins A-B.
Reduced Power Spinup (RPS) Mode
Implementation of RPS requires a jumper to be added to the 4-pin jumper block on the WD
Scorpio drive. To configure the drive for RPS mode, place a jumper shunt on pins C-B as
shown in Figure 5-4 below. A 2.54 mm mini jumper shunt (low profile) is required. This jumper
shunt is available from suppliers such as Gradconn (www.gradconn.com, part number BB02-
QA).
Figure 5-4. Jumper Settings for WD Scorpio Hard Drives
