White Papers

January 2021
Statement of Volatility – Dell OptiPlex 7090 Micro Form
Factor
CAUTION: A CAUTION indicates either potential damage to hardware or loss of data and tells you how to avoid the problem.
The Dell OptiPlex 7090 Micro Form Factor 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 OptiPlex 7090 Micro Form Factor system board.
Description
Reference
Designator
Volatility Description
User Accessible
for external data
Remedial Action
(Action necessary to
prevent loss of data)
Embedded
Flash
memory in
embedded
controller
MICROCHIP
DEC1515H-
D0-I/Z2
U5
The two SRAM blocks in the DEC1515 total
256 KB.
The DEC1515 contains a 64 KB block of
ROM.
EC use 1 MB with SPI ROM by G3 sharing
mode.
Yes
N/A
System BIOS
U21
Non-volatile memory, 256 Mbits (32 MB),
System BIOS and Video BIOS for basic
boot operation, ePSA (on board
diagnostics.)
No
N/A
TPM
Nuvoton
NPCT750JA
DYX
U40
28 K bytes non-volatile memory located in
the TPM module.
No
N/A
System
Memory –
DDR4 DIMM
memory
Connections:
DIMM1, DIMM2,
Volatile memory in OFF state (see state
definitions later in text)
One to two modules will be populated.
System memory size will depend on DIMM
modules and will be between 4 GB to 32
GB.
Yes
Power off system.
System
memory SPD
EEPROM
On memory
DIMM(s)
Non-volatile EEPROM memory. 512 bytes.
One Device present on each DIMM. Stores
memory manufacturer data and timing
information for correct operation of system
memory.
No
N/A
RTC CMOS
BATTERY
Volatile battery back-backed CMOS
memory 256 bytes. Stores CMOS
information.
No
Removing the on-
board Coin Cell
battery.
Video
memory –
type – see
next column
UMA
architecture-
uses system
memory.
Volatile memory in off state.
UMA uses main system memory size
allocated out of main memory.
No
Enter S3-S5 state
below.
Hard drive
User
replaceable
Non-volatile magnetic media, various sizes
in GB.
Yes
Low level format.