Switch number Description Switch setting Definition
SW1 - 5 Boot block recovery The default position is
off, allowing the blade
server to boot from the
primary UEFI
firmware.
When the switch is on
it allows the blade
server to boot using
the backup UEFI.
SW1 - 6 IMM force update The default position is
off.
For trained service
technician only.
SW1 - 7 Wake on LAN (WOL)
disable
The default position is
off.
Turning this switch to
the on position
disables WOL.
SW1 - 8 Force H8 update The default position is
off.
N/A
SW3 Light path diagnostics
switch
The default position is
off. Turning this switch
on lights the light path
diagnostic LEDs.
Push down on the
light path diagnostics
switch push button to
light the diagnostic
LEDs.
16 BladeCenter HS22V Type 7871 and 1949: Problem Determination and Service Guide
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