Quick Reference Guide

June 2013

Statement of Volatility – Dell Optiplex 9020 AIO

CAUTION: A CAUTION indicates either potential damage to hardware or loss of data and tells you how to avoid the
problem.
The Dell OptiPlex 9020 AIO 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
OptiPlex 9020 AIO 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)
Embedded
Flash in
embedded
controller
SMSC5555
U9425
 96K bytes non-volatile memory.
2K bytes of on-chip ROM for
keyboard controller 256 bytes of
on-chip RAM.
No N/A
Panel EDID
& setting in
eDP
converter IC
U29 Non-volatile memory, 1024
bytes.
No
N/A
System
BIOS
J131,
J132
Non Volatile memory, 64 Mbit
(8 MB) & 32 Mbit (4 MB),
System BIOS and Video BIOS
for basic boot operation, PSA
(on board diags), PXE diags.
No N/A
System
Memory –
DDR3
memory
Two
SODIMM
connectors:
XMM1,3
Volatile memory in OFF state
One to two modules must be
populated. System memory
size will depend on SODIMM
modules and must be between
2 GB and 16 GB.
Yes Power off system
Media Card
–
SD/MS/MM
C/xD
One media
card slot:
J56
Non Volatile memory Yes N/A
System
memory
SPD
EEPROM
On System
memory
SODIMM(
s) – 2
present
Non Volatile memory 512
Bytes.
Stores memory manufacturer
data and timing information
for correct operation of system
memory.
No N/A
TPM U9421 4K bytes non-volatile memory
located in the TPM module.
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.