HP ZBook 17 G2 Mobile Workstation Bedienungsanleitung PDF herunterladen (Seite 161)

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?

firmware, and

critical PC

configuration

data for select

platforms that

support HP

Sure Start.

Real Time Clock

(RTC) battery

backed-up CMOS

configuration

memory (CMOS)

256 bytes No Yes Stores system

date and time

and noncritical

data.

RTC battery backed-up CMOS

is programmed using the

Computer Setup (BIOS), or

changing the Microsoft

Windows date & time.

This memory is not write-

protected.

Controller (NIC)

EEPROM

64 KBytes

(not customer

accessible)

No Yes Store NIC

configuration

and NIC

firmware.

NIC EEPROM is programmed

using a utility from the NIC

vendor that can be run from

DOS.

A utility is required to

write data to this memory

and is available from NIC

vendor. Writing data to

this ROM in an

inappropriate manner will

render the NIC non-

functional.

DIMM Serial

Presence Detect

(SPD)

configuration data

256 bytes per

memory

module, 128

bytes

programmabl

e (not

customer

accessible)

No Yes Stores memory

module

information.

DIMM SPD is 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

Computer Setup (BIOS) or a

custom utility.

A utility is required for

writing data to this

memory and is available

on the HP website; go to

http://www.hp.com/

support, and select your

country. Select Drivers &

Downloads, and then

follow the on-screen

instructions.

NOTE: Writing data to

this ROM in an

inappropriate manner can

render the PC non-

functional.

Intel Management

Engine Firmware

(present in only

specific ZBook and

EliteBook models.

For more

information, go to

http://www.hp.com/

support, and

select your

country. Select

1.5 MBytes 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) setup utility. The third

party data store contents can

be populated by a remote

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.

Nonvolatile memory usage 149

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