Reference Guide

Dell Inc. Telephone: [phone]
One Dell Way Telefax: 512.728.3653
Round Rock, TX78682
DELL CONFIDENTIAL Page 1
Date: Apr 29, 2019
Subject: Statement of Volatility – Dell OptiPlex 7070_Tower
To whom it may concern:
The Dell OptiPlex 7070_Tower contains both “volatile” and “non-volatile” (NV) components. Volatile components
lose their data immediately upon removal of power from the component. Non-volatile components continue to
retain their data even after the power has been removed from the component. The following volatile and NV
components are present on the Dell OptiPlex 7070_Tower motherboard:
Description
Reference
Designator
Volatility Description
User Accessible
for external data
Remedial Action
(action necessary to
lose data
)
Embedded Flash
memory in
embedded
controller SMSC
SCH5555V-NU
U5 2K bytes of on-chip ROM
and 256 bytes of on-chip
RAM
No N/A
Type C Port
controller
Cypress
CYPD4125-
40LQXIT
U3451 128K bytes of on-chip Flash
and 8K bytes SRAM.
No N/A
System BIOS U8 32M bytes non-volatile
memory, system BIOS and
video BIOS for basic boot
operation, ePSA (on board
diagnostics.)
No N/A
TPM
Nuvoton
NPCT750JAAYX
U48(Nuvoton) 24K bytes non-volatile
memory located in Nuvoton
TPM.
No N/A
System Memory –
DDR4 DIMM
memory
Connectons:
DIMM1,
DIMM2,
DIMM3,
DIMM4.
Volatile memory in off state
(see state definitions later in
text)
One to four modules will be
populated. System memory
size will depend on DIMM
modules and will be between
4GB to 64GB.
Yes Power off system.
System memory
SPD EEPROM
On memory
DIMM(s)
256 bytes non-volatile
EEPROM memory. One
Device present on each
DIMM.
Stores memory
manufacturer data and
timing information for correct
operation of system
memor
y
.
No N/A