Dell Latitude 14 Rugged Extreme User Manual

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

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

U38

256K and 2K byte of
embedded Flash memory for
embedded controller BIOS
code, asset tag and BIOS
passwords

No

N/A

Panel
EEDID
EEPROM

Part of panel
assembly

Non Volatile memory 64K
bytes. Stores panel
manufacturing information,
display configuration data

No

Part of panel assembly

System
BIOS

U1,U2

Non Volatile memory, 64Mbit
(8MB), 32Mbit (4MB) System
BIOS and Video BIOS for
basic boot operation, PSA (on
board diags), PXE diags.

No

N/A

System
Memory –
DDR3L
memory

Connectors
JDIMM1
and
JDIMM2

Volatile memory in OFF state
(see state definitions later in
text) One or both modules will
be populated. System memory
size will depend on SoDIMM
modules and will be between
1GB and 8GB

Yes

Power off system

System
memory
SPD
EEPROM

On System
memory
SODIMM(s)
– one or two
present

Non-Volatile memory 2Kbit
(256 bytes). One device
present on each SoDIMM.
Stores memory manufacturer
data and timing information
for correct operation of system
memory.

No

N/A
RTC

CMOS –
BBRAM
(battery
backed up)

UC1 Non Volatile memory 256
bytes. Stores CMOS
information

No

N/A

Video
memory –
frame
buffer

UMA
architecture­uses
system
DDR3L.
Discrete
Graphics
systems use
DDR3L

Volatile memory in off state.
2GB DDR3L for Discrete
Graphics systems. UMA uses
main system memory size
allocated out of main memory.

No

N/A

Statement of Volatility – Dell Latitude 14 Rugged
Extreme (7404)

The Dell Latitude 14 Rugged Extreme (7404) 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 14 Rugged Extreme (7404) system board.

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

Month yyyy

Description

Reference
Designator

Volatility Description

User
Accessible
for external
data

Remedial Action (Action
necessary to prevent loss of
data)

(UV4-UV7)
for frame
buffer

DP hub
FW

U7

Non Volatile memory for DP
hub Firmware

No

N/A

TPM
Controller

U25

Non Volatile memory, 2K bits
(256 bytes) ROM

No

N/A

Hard drive

User
replaceable

Non Volatile SSD (solid state
flash drive), various sizes in
GB

Yes

Low level format

CD­ROM/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 (DDR3L,
1333/1600MHz). Secondary power loss (removing the on-board coin-cell battery) destroys system data on the system
configuration and time-of-day information.

______________

© 2014 Dell Inc.

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