Installation and Setup Procedures
WD RE3 XL333M
42
RELEASED 11/13/08 (WD CONFIDENTIAL)
2679-701179-A01
5.2.4
Grounding
The PCBA and HDA grounds are always connected together in the drive and cannot be
disconnected. The drive mounting screws, unless intentionally isolated, will provide additional
ground connections between the HDA and the system chassis. If the drive isn't grounded via
mounting screws as described under “Mounting” on page 41, there may be increased
electrical emissions (EMI).
5.3
Hard Drive Installation
If your system does not support hot plugging (see “Hot Plug Support” on page 23), it must be
turned off and unplugged before installing your hard drive.
5.3.1
Jumper Settings
It is not necessary to move the jumper shunt on the drive for workstation/desktop use. For
enterprise storage enviroments, the advanced settings are as follows:
SSC Mode
– Spread spectrum clocking feature enabled or disabled. Default setting is
disabled.
OPT1
– 1.5 Gb/s data transfer speed enabled or disabled. Default setting is disabled.
Figure 5-1. Jumper Settings