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?
Webcamera 64 KBits No Yes Store
webcamera
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
512 KBytes 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.
Questions and answers
1. How can the BIOS settings be restored (returned to default settings)?
a. Turn on or restart the slate and press F10 when prompted near the bottom of the display.
b. Select File, then select Restore defaults.
c. Follow the on-screen instructions.
d. Select File, save changes and exit, then press Enter.
2. What kind of configuration data is stored on the DIMM Serial Presence Detect (SPD) memory
module? How would this data be written?
The DIMM SPD memory contains information about the memory module such as size, serial number,
data width, speed/timing, voltage and thermal information. This information is written by the module
manufacturer and stored on an EEPROM. This EEPROM cannot be written to when the memory module is
installed in a PC. Third party tools do exist that can write to the EEPROM when the memory module is
not installed in a PC. There are various third party tools available to read SPD memory.
3. Does the “Firmware Hub for System BIOS” contain the BIOS program? Is this chip writable, and if so
how?
The Firmware Hub does contain the BIOS program and is writable. A utility is required to perform the
write function.
4. In some PC systems, the Firmware Hub for System BIOS is a flash memory chip so that updates can
be written by the customer. Is this true for these BIOS chips?
Yes, they are flash memory chips.
132 Chapter 15 Statement of Volatility
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