Dell Latitude 7400 User Manual

Statement of Volatility – Dell Latitude 7400

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)

SSD
drive(s)

M.2 – 2280
M.2 – 2230

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

Yes

Low level format

System
BIOS

UC5/UC6

Non Volatile memory, 256/128Mbit
(32/16MB),

System BIOS

and Video
BIOS for basic boot operation, PSA (on
board diags), PXE diags.,

Intel ME
firmware for system configuration,
security and protection and ISH
firmware.

No

NA

Embedded
Flash in
embedded
controller
MEC5106

UE1

64K byte of embedded boot ROM for
embedded controller boot code which
loads an executable code image into
SRAM.

No

NA

Alpine
Ridge NVM
Flash

UT2

Non Volatile memory

for Intel Alpine

Ridge NVM flash

No

NA

USB-Type
C PD

UT6

Non Volatile memory for USB type-C
PD F/W

No

NA

LCD Panel
EEDID
EEPROM

Part of panel
assembly

Non Volatile memory, Stores panel
manufacturing information, display
configuration data

No

NA

System
Memory –
DDR4
memory

Two
SODIMMs
JDIMM1 & 2

Volatile memory in OFF state (see state
definitions later in text)

One module must be populated.
System memory size will depend on
SODIMM module and must be
between 4 GB and 16 GB.

Yes

Power off system

RTC CMOS

UC1 (PCH)

Non Volatile memory 256 bytes
Stores CMOS information

No

NA

Video
memory –
frame
buffer

For UMA
platform:
Using
system
memory

Volatile memory in off state.
UMA uses main system memory size

allocated out of main memory.

No

Power off system

The Dell Latitude 7400 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
Latitude 7400 system board.

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

08/2020

Intel ME
Firmware

UC5

Non Volatile memory, Intel ME
firmware for system configuration,
security and protection

No

N/A

Security
Controller

Serial Flash
Memory

U1 (up-sell
USH
daughter
board)

Non Volatile memory, 128 Mbit
(16Mbyte)

No

N/A
TPM

Controller

UZ12

Non Volatile memory, 112KB

No

N/A

Camera
Embedded
Flash

N/A

Non Volatile memory

No

N/A

Touch
screen
Embedded
Flash

N/A

Non Volatile memory

No

N/A

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 (DDR4, 2400 MHz). Secondary power
loss (removing the on-board coin-cell battery) destroys system data on the system configuration and time-of-day information.