HP ProLiant SL4545 G7 Server - Manual (Page 9)

Component identification 9
Position Default Function
S1
Off Off—iLO security is enabled.
On—iLO security is disabled.
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 enabled.
On—Power-on password disabled.
S6
Off Off—No function
On—ROM reads system configuration as invalid.
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. There is an
RBSU setting that erases default settings and fixed disk partitions, which causes a loss of data.
Diagnostic LEDs
Position Position Function
S7 S8 Diagnostic LEDs
Off Off Port 85
Off On Port 84
On Off iLO
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.