HP EliteBook 840 G1 Service Manual page 167

Non Volatile Amount
Memory Type (Size)
Intel 1.5 or
Management 5MByte
Engine Firmware
(present only in
models ending in
a 'p' or 'w' or
with Intel
Centrino Pro
technology)
Bluetooth flash 2Mbit
802.11 WLAN 4kb to 8kb
EEPROM
Web Camera 64K bit
Fingerprint 512kByte
Reader Flash
Does this Does this
memory memory
store retain
customer data when
data? power is
removed?
Yes Yes
No Yes
No Yes
No Yes
Yes Yes
What is the How is data input into
purpose of this memory?
this
memory?
Stores Management Engine Code
Management is programmed at the
Engine Code, factory. Code is updated via
Settings, Intel secure firmware update
Provisioning utility. Unique Provisioning
Data and iAMT Data can be entered at the
third party factory or by an
data store. 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.
Stores Programmed at the factory.
Bluetooth Tools for writing data to this
configuration memory are not publicly
and firmware. available but can be
obtained from the silicon
vendor.
Stores Programmed at the factory.
configuration Tools for writing data to this
and calibration memory are not made
data. public.
Store Web Using a utility from the
Cam device manufacturer that
configuration can be run from Windows.
and firmware.
Stores By enrolling in HP
fingerprint ProtectTools Security
templates. Manager.
How is this memory
write protected?
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.
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.
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.
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.
Only a digitally signed
application can make
the call to write to the
flash.
Non-volatile memory usage
155