HP ZBook 15 Mobile Workstation Maintenance and Service Guide

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?
System BIOS 4 to 5
MBytes
Yes Yes Store system
BIOS code
and PC
configuration
data.
System BIOS code is
programmed at the factory.
Code is updated when the
system BIOS is updated.
Configuration data and
settings are input using the
F10 setup utility or a custom
utility.
A utility is required for
writing data to this
memory and is available
on the HP website.
Writing data to this ROM
in an inappropriate
manner can render the PC
non-functional.
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.
144 Chapter 10 Statement of Volatility