HP EliteBook 850 G7 Maintenance And Service Manual page 101

Table 11-1 Troubleshooting steps for nonvolatile memory usage (continued)
Nonvolatile
memory type Amount (Size)
Intel Management 1.5 MB or 7 MB
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.)
Bluetooth flash 2 megabits
(select products
only)
802.11 WLAN 4 kilobits to 8
EEPROM kilobits
Camera (select 64 kilobits
products only)
Fingerprint reader 512 KB flash
(select products
only)
Does this Does this
memory memory
store retain data
customer when power
data? is removed?
Yes Yes
No Yes
No Yes
No Yes
Yes Yes
What is the
purpose of this How is data entered into this
memory? memory?
Stores Management Engine Code is
Management programmed at the factory.
Engine Code, Code is updated via Intel
Settings, secure firmware update
Provisioning utility. Unique Provisioning
Data and iAMT Data can be entered at the
third-party data factory or by an
store. 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.
Stores Bluetooth flash is
Bluetooth programmed at the factory.
configuration Tools for writing data to this
and firmware. memory are not publicly
available but can be obtained
from the silicon vendor.
Stores 802.11 WLAN EEPROM is
configuration programmed at the factory.
and calibration Tools for writing data to this
data. memory are not made public.
Stores camera Camera memory is
configuration programmed using a utility
and firmware. from the device
manufacturer that can be run
from Windows.
Stores Fingerprint reader memory is
fingerprint programmed by user
templates. enrollment in HP
ProtectTools Security
Manager.
How is this 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.
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.
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.
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.
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.
Only a digitally signed
application can make the
call to write to the flash.
Nonvolatile memory usage 91