Dell PowerEdge T300 - Manual (Page 171)

Jumpers and Connectors
171
SAS Backplane Board Connectors
CAUTION:
Many repairs may only be done by a certified service technician. You
should only perform troubleshooting and simple repairs as authorized in your
product documentation, or as directed by the online or telephone service and
support team. Damage due to servicing that is not authorized by Dell is not covered
by your warranty. Read and follow the safety instructions that came with the
product.
The SAS backplane is present in systems that have a front-loading hot-plug
hard drive bay (when available). Figure 6-2 shows the locations of the SAS
backplane connectors.
Table 6-2. System Board Jumper Settings
Jumper Setting Description
NVRAM_CLR
Pins 3-5 (default)
The configuration settings in NVRAM are
retained at next system boot.
Pins 1-3
The configuration settings are cleared at the next
system boot. (If the configuration settings
become corrupted to the point where the system
will not boot, install the jumper and boot the
system. Remove the jumper before restoring the
configuration information.)
PWRD_EN
Pins 2-4 (default)
The password feature is enabled.
Pins 4-6
The password feature is disabled.
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