Table 2. System board jumpers (continued)
Jumper number Jumper name Jumper setting
Notes:
1. If no jumper is present, the server responds as if the pins are set to 1 and 2.
2. Changing the position of the UEFI boot recovery jumper from pins 1 and 2 to pins 2 and
3 before the server is turned on alters which flash ROM page is loaded. Do not change
the jumper pin position after the server is turned on. This can cause an unpredictable
problem.
The following table describes the functions of the SW3 switch block on the system
board.
Table 3. System board SW3 switch block definition
Switch
number Default position Description
1 Off Clear CMOS memory. When this
switch is toggled to On, it clears the
data in CMOS memory, which clears
the power-on password.
2 Off Trust Platform Module (TPM)
physical presence. Turning this
switch to the on position indicates a
physical presence to the TPM.
3 Off Reserved.
4 Off Reserved.
The following table describes the functions of the SW4 switch block on the system
board.
Table 4. System board SW4 switch block definition
Switch
number Default position Description
1 Off Power-on password override.
Changing the position of this switch
bypasses the power-on password
check the next time the server is
turned on and starts the Setup utility
so that you can change or delete the
power-on password. You do not have
to move the switch back to the
default position after the power-on
password in overridden.
Changing the position of this switch
does not affect the administrator
password check if an administrator
password is set.
See “Passwords” on page 263 for
additional information about
passwords.
Chapter 2. Introduction 19
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