HP 355 G2 Maintenance And Service Manual page 151

Non Volatile Amount
Memory (Size)
Type
System BIOS 4 to 5 MBytes
Intel 1.5 or 5
Management MBytes
Engine
Firmware
(present only in
models ending
in a 'p' or 'w'
or with Intel
Centrino Pro
technology)
Does this Does this
memory memory
store retain data
customer when power
data? is removed?
Yes Yes
Yes Yes
What is the How is data
purpose of input into
this this
memory? memory?
Store system System BIOS
BIOS code and code is
PC programmed at
configuration the factory.
data. Code is
updated when
the system BIOS
is updated.
Configuration
data and
settings are
input using the
F10 setup utility
or a custom
utility.
Stores Management
Management Engine Code is
Engine Code, programmed at
Settings, the factory.
Provisioning Code is
Data and iAMT updated via
third party data Intel secure
store. 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.
Non-volatile memory usage
How is this
memory
write
protected?
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
nonfunctional.
The Intel chipset
is configured to
enforce
hardware
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.
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