Component identification 13
Position Default Function
S2
Off Off = System configuration can be
changed
On = System configuration is locked
S3
Off Reserved
S4
Off Reserved
S5
Off Off = Power-on password is enabled
On = Power-on password is disabled
S6
Off Off = No function
On = Reset configuration
S7
— Reserved
— Reserved
S9
— Reserved
S10
— Reserved
S11
— Reserved
S12
— Reserved
When the system maintenance switch position 6 is set to the On position, the system is prepared to erase all
system configuration settings from both CMOS and NVRAM.
CAUTION: Clearing CMOS and/or NVRAM deletes configuration information. Be sure to
properly configure the server or data loss could occur.
NMI jumper
The NMI jumper allows administrators to perform a memory dump before performing a hard reset. Crash
dump analysis is an essential part of eliminating reliability problems, such as hangs or crashes in OSs, device
drivers, and applications. Many crashes can freeze a system, requiring you to do a hard reset. Resetting the
system erases any information that would support root cause analysis.
Systems running Microsoft® Windows® experience a blue-screen trap when the OS crashes. When this
happens, Microsoft® recommends that system administrators perform an NMI event by temporarily shorting
the NMI header with a jumper. The NMI event enables a hung system to become responsive again.
Device numbers
• LFF configuration
• SFF configuration
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