System-board switches
Use this information to locate and define system-board switches in the blade
server.
The following illustration shows the location of the light path diagnostics switch
on the system board.
SW1
SW3
The following table describes the function of each switch in the switch blocks (SW1
and SW3).
Switch number
Description
Switch setting
Definition
SW1 - 1
Password override
switch
Changing position of
this switch resets the
power on password.
This switch overrides
the power on
password. The system
ships with this switch
off, but it can be on or
off in a functioning
system.
SW1 - 2
Trusted Platform
Module (TPM)
physical presence
The default position is
off.
Turning this switch to
the on position
indicates a physical
presence to the TPM.
SW1 - 3
ICH10 RTC reset
Normally open. Toggle
to reset RTC.
Resets the RTC. A
momentary toggle is
all that is required. To
avoid excessive battery
drain, do not leave this
switch closed.
SW1 - 4
Boot using the backup
IMM code.
The default position is
off, allowing the blade
server to boot from the
primary IMM
firmware.
When the switch is in
the default off
position, the blade
server will boot using
the primary IMM
firmware. When the
switch is on, the blade
server will boot using
a backup of the IMM
firmware.
Chapter 2. Introduction
15
Summary of Contents for BladeCenter HS22V 7871
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