HP ProBook x360 Maintenance and Service Guide - Page 82

Table 10-1, Statement of memory volatility

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Table 10-1 Troubleshooting steps for nonvolatile memory usage (continued) Nonvolatile 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 How is data entered into this How is this memory memory? memory? write-protected? on the HP website; go to http://www.hp.com/ support. Select Find your product, and then follow the on-screen instructions. Intel Management 1.5 MB or 7 MB Yes Yes Engine Firmware (present only in select Elite or Z models. For more information, go to http://www.hp.com/ support. Select Identify your product for manuals and specific product information, and then follow the on-screen instructions.) 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 be populated by a remote management console or local applications that have been registered by an administrator to have access to the space. The Intel chipset is configured to enforce hardware protection to block all direct read-write access to this area. An Intel utility must be used for updating the firmware. Only firmware updates digitally signed by Intel can be applied using this utility. Bluetooth flash 2 megabits No Yes Stores Bluetooth flash is A utility must be used for (select products Bluetooth programmed at the factory. writing data to this only) configuration Tools for writing data to this memory and is made and firmware. memory are not publicly available through newer available but can be obtained versions of the driver from the silicon vendor. whenever the flash requires an upgrade. 802.11 WLAN 4 kilobits to 8 No Yes Stores 802.11 WLAN EEPROM is A utility must be used for EEPROM kilobits configuration programmed at the factory. writing data to this and calibration Tools for writing data to this memory and is typically data. memory are not made public. not made available to the public unless a firmware upgrade is necessary to address a unique issue. Camera (select 64 kilobits No Yes Stores camera Camera memory is A utility must be used for products only) configuration programmed using a utility writing data to this and firmware. from the device memory and is typically manufacturer that can be run not made available to the from Windows. public unless a firmware upgrade is necessary to address a unique issue. Fingerprint reader 512 KB flash Yes Yes (select products only) Stores fingerprint templates. Fingerprint reader memory is programmed by user enrollment in HP ProtectTools Security Manager. Only a digitally signed application can make the call to write to the flash. 74 Chapter 10 Statement of memory volatility

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Table 10-1
Troubleshooting steps for nonvolatile memory usage (continued)
Nonvolatile
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 entered into this
memory?
How is this memory
write-protected?
on the HP website; go to
support
. Select
Find your
product
, and then follow
the on-screen
instructions.
Intel Management
Engine Firmware
(present only in
select Elite or Z
models. For more
information, go to
support
. Select
Identify your
product for
manuals and
specific
product
information
, and
then follow the
on-screen
instructions.)
1.5 MB or 7 MB
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 be
populated by a remote
management console or local
applications that have been
registered by an
administrator to have access
to the space.
The Intel chipset is
configured
to enforce
hardware protection to
block all direct read-write
access to this area. An
Intel utility must be used
for updating the
firmware.
Only
firmware
updates digitally signed
by Intel can be applied
using this utility.
Bluetooth
flash
(select products
only)
2 megabits
No
Yes
Stores
Bluetooth
configuration
and
firmware.
Bluetooth
flash
is
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 must be used for
writing data to this
memory and is made
available through newer
versions of the driver
whenever the
flash
requires an upgrade.
802.11 WLAN
EEPROM
4 kilobits to 8
kilobits
No
Yes
Stores
configuration
and calibration
data.
802.11 WLAN EEPROM is
programmed at the factory.
Tools for writing data to this
memory are not made public.
A utility must be used 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.
Camera (select
products only)
64 kilobits
No
Yes
Stores camera
configuration
and
firmware.
Camera memory is
programmed using a utility
from the device
manufacturer that can be run
from Windows.
A utility must be used 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
(select products
only)
512 KB
flash
Yes
Yes
Stores
fingerprint
templates.
Fingerprint reader memory is
programmed by user
enrollment in HP
ProtectTools Security
Manager.
Only a digitally signed
application can make the
call to write to the
flash.
74
Chapter 10
Statement of memory volatility