HP ZBook Fury 17 G7 Maintenance And Service Manual page 218

Table 12-1 Troubleshooting steps for nonvolatile memory usage (continued)
Nonvolatile
memory type Amount (Size)
DIMM Serial 256 bytes per
Presence Detect memory
(SPD) configuration module, 128
data bytes
programmable
(not customer
accessible)
System BIOS 9 MB
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
204 Chapter 12 Statement of memory volatility
Does this Does this
memory memory
store retain data
customer when power
data? is removed?
No Yes
Yes Yes
Yes Yes
No Yes
No Yes
What is the
purpose of this How is data entered into this
memory? memory?
Stores memory DIMM SPD is programmed by
module the memory vendor.
information.
Stores system System BIOS code is
BIOS code and programmed at the factory.
computer Code is updated when the
configuration system BIOS is updated.
data. Configuration data and
settings are entered using the
Computer Setup (BIOS) or a
custom utility.
Stores Management Engine Code is
Management programmed at the factory.
Engine Code, Code is updated via Intel
Settings, secure firmware update utility.
Provisioning Unique Provisioning Data can
Data and iAMT be entered at the factory or by
third-party data an administrator using the
store. 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.
How is this memory write-
protected?
Data cannot be written to
this memory when the
module is installed in a
computer. The specific
write-protection method
varies by memory vendor.
NOTE: Writing data to
this ROM in an
inappropriate manner can
render the computer non-
functional.
A utility must be used for
writing data to this
memory and is available
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.
ENWW