HP 242 G1, Руководство по техническому обслуживанию и ремонту

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Non Volatile
Memory Type Amount
(Size) Does this
memory
store
customer
data? Does this
memory
retain data
when
power is
removed? What is the
purpose of
this memory? How is data input into this
memory? How is this memory
write protected?
Intel
Management
Engine Firmware
(present only in
models ending in
a ‘p’ or ‘w’ or with
Intel Centrino
Pro technology) 1.5 or
5MByte Yes Yes Stores
Management
Engine Code,
Settings,
Provisioning
Data and iAMT
third party data
store. Management Engine Code
is programmed at the
factory. Code is updated via
Intel secure firmware
update utility. Unique
Provisioning Data can be
entered at the factory or by
an administrator using the
Management Engine
(MEBx) setup utility. The
third party data store
contents can populated by
a remote management
console or local
applications registered by
an administrator to have
access to the space. The Intel chipset is
configured to enforce
HW protection to block
all direct read/write
access to this area. An
Intel utility is required for
updating the firmware.
Only firmware updates
digitally signed by Intel
can be applied using
this utility.
Bluetooth flash 2Mbit No Yes Stores
Bluetooth
configuration
and firmware. Programmed at the factory.
Tools for writing data to this
memory are not publicly
available but can be
obtained from the silicon
vendor. A utility is required for
writing data to this
memory and is made
available through newer
versions of the driver if
the flash requires an
upgrade.
802.11 WLAN
EEPROM 4kb to 8kb No Yes Stores
configuration
and calibration
data. Programmed at the factory.
Tools for writing data to this
memory are not made
public. A utility is required for
writing data to this
memory and is typically
not made available to
the public unless a
firmware upgrade is
necessary to address a
unique issue.
Web Camera 64K bit No Yes Store Web
Cam
configuration
and firmware. Using a utility from the
device manufacturer that
can be run from Windows. A utility is required for
writing data to this
memory and is typically
not made available to
the public unless a
firmware upgrade is
necessary to address a
unique issue.
Fingerprint
Reader 512kByte
Flash Yes Yes Stores
fingerprint
templates. By enrolling in HP
ProtectTools Security
Manager. Only a digitally signed
application can make
the call to write to the
flash.
96 Chapter 10 Statement of Volatility