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Dell Latitude E6540 User manual

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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.
______________
© 2013 Dell Inc.
Trademarks used in this text: Dell™, the DELL logo, Latitude™ are trademarks of Dell Inc. SMSC is trademark of Standard Microsystems Corp.