Dell PowerEdge T300 Hardware Owner's Manual (PDF) - Page 171

SAS Backplane Board Connectors

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Table 6-2. System Board Jumper Settings Jumper Setting NVRAM_CLR Description The configuration settings in NVRAM are retained at next system boot. PWRD_EN Pins 3-5 (default) 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.) The password feature is enabled. Pins 2-4 (default) The password feature is disabled. Pins 4-6 SAS Backplane Board Connectors CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. Before performing any procedure, see your Product Information Guide for complete information about safety precautions, working inside the computer and protecting against electrostatic discharge. 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. Jumpers and Connectors 171

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Jumpers and Connectors
171
SAS Backplane Board Connectors
CAUTION:
Only trained service technicians are authorized to remove the system
cover and access any of the components inside the system. Before performing any
procedure, see your
Product Information Guide
for complete information about
safety precautions, working inside the computer and protecting against
electrostatic discharge.
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.