Dell Latitude E6540 Manual de usuario

June 2013



Statement of Volatility – Dell Latitude E6540



CAUTION: A CAUTION indicates either potential damage to hardware or loss of data and tells you how to avoid the

problem.

The

Dell Latitude E6540

contains both volatile and non-volatile (NV) components. Volatile components lose their data

immediately after power is removed from the component. Non-volatile (NV) components continue to retain their data even

after power is removed from the component. The following NV components are present on the

Dell Latitude E6540

system board.

Table 1. List of Non-Volatile Components on System Board

Description Reference

Designator Volatility Description

User

Accessible

for external

data

Remedial Action (Action

necessary to prevent loss of

data)

Embedded

Flash in

embedded

controller

MEC5075

U51 288 KB of embedded Flash

memory for keyboard

controller BIOS code, asset tag

and BIOS passwords

No N/A

Panel

EEDID

EEPROM

Part of panel

assembly

Non Volatile memory, 512

bytes.

No Part of panel assembly

System

BIOS

U53 Non Volatile memory, 32 Mbit

(4 MB), System BIOS and

Video BIOS for basic boot

operation, PSA (on board

diagnostics), PXE diagnostics.

No N/A

Video

BIOS

Embedded in

system BIOS

Non Volatile memory, 512

kbit (64 KB), Graphics system

BIOS.

No N/A

System

Memory –

DDR3L

memory

Two

SODIMM

connectors:

JDIMM1,2

Volatile memory in OFF state

NOTE:



See state definitions later

in text.

One to two modules must be

populated. System memory

size will depend on SODIMM

modules and must be between

2 GB and 8 GB.

Yes Power off system

System

memory

SPD

EEPROM

On System

memory

SODIMM(s)

– 1-2 present

Non Volatile memory 512

Bytes.

Stores memory manufacturer

data and timing information

for correct operation of system

memory.

No N/A

Description Reference

Designator Volatility Description

User

Accessible

for external

data

Remedial Action (Action

necessary to prevent loss of

data)

RTC

CMOS –

BBRAM

(battery

backed up)

UH1

Non Volatile memory,

64 Bytes.

Stores CMOS information.

No N/A

Video

memory –

frame

buffer

For UMA

platform:

Using

system

memory

For E6540

DSC

platform:

UV3, UV4,

UV5, UV6,

UV7, UV8,

UV9, UV10,

For E6440

DSC

platform:

UV3, UV4,

UV5, UV6,

Volatile memory in off state.

2 GB GDDR5 for discrete

graphics systems.

No N/A

Intel ME

Firmware

U52 Non Volatile memory, 32 Mbit

(4 MB), Intel ME firmware for

system configuration, security

and protection

No N/A

Hard

drive(s)

User

replaceable -

one or two.

Non Volatile magnetic media,

various sizes in GB. May also

be SSD (solid state flash

drive).

Yes Low level format

CD-

ROM/RW/

DVD/

DVD+RW/

Diskette

Drives

User

replaceable Non Volatile optical media. Yes Low level format/erase



CAUTION: All other components on the system board lose data if power is removed from the system. Primary power

loss (unplugging the power cord and removing the battery) destroys all user data on the memory (DDR3, 1067 MHz).

Secondary power loss (removing the on-board coin-cell battery) destroys system data on the system configuration

and time-of-day information.

______________

Trademarks used in this text: Dell™, the DELL logo, Latitude™ are trademarks of Dell Inc. SMSC is trademark of Standard Microsystems Corp.

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