HP x2 1011 G1 manual Non-volatile memory usage, Data when Memory? Protected? Power is Removed?

Non-volatile memory usage

Non Volatile	Amount (Size)	Does this	Does this	What is the	How is data	How is this
Memory Type		memory store	memory retain	purpose of this	input into this	memory write
		customer data?	data when	memory?	memory?	protected?
			power is
			removed?
Real Time Clock	256 Bytes	No	Yes	Stores system	Using the F10	This memory is
(RTC) battery				date and time	Setup utility or	not write-
backed-up CMOS				and limited	changing the	protected. HP
configuration				keyboard	Microsoft	recommends
memory (CMOS)				controller data.	Windows date	password
					and time.	protecting the
						F10 Setup
						utility.
Controller (NIC)	64 KBytes (not	No	Yes	Store NIC	Using a utility	A utility is
EEPROM	customer			configuration	from the NIC	required to write
	accessible)			and NIC	vendor that can	data to this
				firmware.	be run from DOS.	memory and is
						available from
						NIC vendor.
						Writing data to
						this ROM in an
						inappropriate
						manner will
						render the NIC
						nonfunctional.
Keyboard ROM	64 KBytes (not	No	Yes	Stores firmware	Programmed at	A utility is
	customer			code (keyboard,	the factory.	required for
	accessible)			mouse, &	Code is updated	writing data to
				battery	when the system	this memory and
				management).	BIOS is updated.	is available on
						the HP website.
						Writing data to
						this ROM in an
						inappropriate
						manner can
						render the PC
						nonfunctional.
DIMM Serial	256 Bytes per	No	Yes	Stores memory	Programmed by	Data cannot be
Presence Detect	memory			module	the memory	written to this
(SPD)	module, 128			information.	vendor.	memory when
configuration	Bytes					the module is
data	programmable					installed in a PC.
	(not customer					The specific
	accessible)					write protection
						method varies
						by memory
						vendor.
System BIOS	4 to 5 MBytes	Yes	Yes	Store system	System BIOS	A utility is
				BIOS code and	code is	required for
				PC configuration	programmed at	writing data to
				data.	the factory.	this memory and
					Code is updated	is available on
					when the system	the HP website.
					BIOS is updated.	Writing data to
					Configuration	this ROM in an
					data and	inappropriate
					settings are	manner can

102 Chapter 10 Statement of Volatility