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Setup Guide

ManualsBrandsDell ManualsComputersLatitude 5420
12
January 2021
Statement of Volatility – Dell Latitude 5420
CAUTION: A CAUTION indicates either potential damage to hardware or loss of data and tells you how to avoid the problem.
The Dell Latitude 5420 contains both volatile and non-volatile components. Volatile components lose their data
immediately after power is removed from the component. Non-volatile components continue to retain their
data even after power is removed from the component. The following Non-volatile components are present on
the Latitude 5420 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)
SSD drive(s)
SSD1: M.2 2280
Non-Volatile magnetic media, various
sizes in GB. SSD (solid state flash drive).
No
Low level format
Embedded
Flash in
embedded
controller
MEC5107
UE1
288 KB of embedded Flash memory
No
N/A
System
BIOS/EC
UC2 (32 MB)
Non-Volatile memory, Video BIOS for
basic boot operation, PSA (on board
diags),
PXE diags.
No
N/A
Thunderbolt
EEPROM
N/A
Non-Volatile memory
No
N/A
LCD Panel
EEDID
EEPROM
Part of panel assembly
Non-Volatile memory, Stores panel
manufacturing information, display
configuration data
No
N/A
System
Memory –
DDR4 memory
Eight DIMM on board
DDR4 memory:
UD1, UD2
UD3, UD4
Volatile memory in OFF state (see state
definitions later in text)
Yes
Power off system
RTC CMOS
UC1 (PCH)
Non-Volatile memory 256 bytes
Stores CMOS information
No
N/A
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
Intel ME
Firmware
Combine on BIOS ROM
Non Volatile memory, , 128 Mbit (16MB)
for non-vPro, 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
(16 Mbyte)
No
N/A
TPM
Controller
UZ4
Non-Volatile memory, 384K bits
No
N/A

Summary of content (2 pages)