Lenovo Flex System x220, Инструкция по установке и обслуживанию

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The following table describes the functions of the switches on switch block SW8, the NMI button, and
the power button.
Table 3. System-board switches
Switch Description Switch setting Definition
SW8-1 Password override The default position is Off. Changing this switch to the
On position overrides the
power-on password.
SW8-2 Trusted Platform Module
(TPM) physical presence The default position is Off. Changing this switch to
the On position indicates
a physical presence to the
TPM.
SW8-3 Real time clock (RTC) reset The default position is Off. Changing this switch to the
On position resets the RTC.
A momentary toggle is all
that is required. To avoid
excessive CMOS battery
drain, do not leave this
switch in the On position.
SW8-4
Boot backup IMM2 uBoot
The default position is Off.
When the switch is in the
Off (default) position, the
compute node will boot by
using the primary IMM2
uBoot firmware. When the
switch is in the On position,
the compute node will boot
by using a backup of the
IMM2 firmware.
SW8-5 Boot backup UEFI The default position is Off. Changing this switch to
the On position forces the
compute node to boot from
the backup UEFI image.
Chapter 1
.
Introduction
19