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Non-volatile memory usage

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?

Real Time Clock

(RTC) battery

backed-up

CMOS

conguration

memory (CMOS)

256 Bytes No Yes Stores system

date and time

and limited

keyboard

controller

data.

Using the F10 Setup utility

or changing the

Microsoft® Windows® date

& time.

This memory is not

write-protected. HP

recommends

password protecting

the F10 Setup utility.

Controller (NIC)

EEPROM

64 Kbytes

(not

customer

accessible)

No Yes Store NIC

conguration

and NIC

rmware.

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

nonfunctional.

Keyboard ROM 64 Kbytes

(not

customer

accessible)

No Yes Stores

rmware 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)

conguration

data

256 Bytes

per memory

module,

128 Bytes

programma

bl e (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 specic

write protection

method varies by

memory vendor.

System BIOS 4 to 5

MBytes

Yes Yes Store system

BIOS code and

conguration

data.

System BIOS code is

programmed at the

factory. Code is updated

when the system BIOS is

updated. Conguration

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

5MByte

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 rmware

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

The Intel chipset is

congured to enforce

HW protection to block

all direct read/write

access to this area. An

Intel utility is required

for updating the

rmware. Only

rmware updates

digitally signed by

Non-volatile memory usage 107

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User Guide71 pages

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HP 15-af131dx Specifications

General

Color	black
OS	windows 10
Software	cyberlink photodirector, cyberlink power media player, cyberlink youcam and more
Numeric Keypad	yes
Touch Screen	no
Screen Type	led
Screen Size	15.6 inches
Screen Resolution	1366 x 768 (hd)
Processor Brand	amd
Processor Model	amd a6-series
Type of Memory	ddr3 sdram
System Memory	4 gigabytes
Audio Type	dts studio sound
Speakers Type	dual
Card Reader	yes
Touchpad	multitouch gesture
Battery Type	lithium-ion polymer