HP ElitePad 1000 G2 - Page 118

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?
render the NIC
nonfunctional.
Keyboard ROM 64 KBytes (not
customer
accessible)
No Yes Stores firmware
code (keyboard,
mouse, &
battery
management).
Programmed at
the factory.
Code is updated
when the system
BIOS is updated.
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.
DIMM Serial
Presence Detect
(SPD)
configuration
data
256 Bytes per
memory
module, 128
Bytes
programmable
(not customer
accessible)
No Yes Stores memory
module
information.
Programmed by
the memory
vendor.
Data cannot be
written to this
memory when
the module is
installed in a PC.
The specific
write protection
method varies
by memory
vendor.
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
nonfunctional.
Intel
Management
Engine Firmware
(present only in
models ending in
a ‘p’ or ‘w’ or
with Intel
Centrino Pro
technology)
1.5 or 5 MBytes 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)
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
110 Chapter 12 Statement of Volatility