Dell OptiPlex 5400 All-in-One Statement of Volatility

Statement of Volatility – Dell Opti Plex 5400/7400 All-in- One CAUTION: A CAUTION indicates either potential damage to hardware or loss of data and tells you how to avoid the problem. The Dell Opti Plex 5400/7400 All-in-One 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 Opti Plex 5400/7400 All-in-One system board. Table 1. List of Non-Volatile Components on System Board

Remedial Action

Reference User Accessible

Description Volatility Description (Action necessary to

Designator for external data

prevent loss of data)

System BIOS U20 Non-Volatile memory, 128 MB (16 MB), No N/A

System BIOS and Video BIOS for basic boot operation, PSA (on board diagnosis)

System BIOS U21 Non-Volatile memory, 256 MB (32 MB), No N/A

System BIOS and Video BIOS for basic boot operation, PSA (on board diagnosis)

System Connectors: Volatile memory in OFF state (see state No Power off system Memory – DIMM1 definitions later in text) DDR4 DIMM

DIMM2 One or two modules will be populated.

memory System memory size depends on DIMM

modules and will be between 4 GB to 32 GB.

Hard drive/ User Non-Volatile magnetic media, various sizes Yes Low level format SDD replaceable in GB

Scalar IC U101 4 MB in non-volatile memory, which stores No N/A Firmware Firmware information for scalar IC Flash EDID U102 8 KB in non-volatile memory, which stores No N/A EEPROM EDID information

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, 2666 MHz). Secondary power loss (removing the on- board coin-cell battery) destroys system data on the system configuration and time-of-day information.

In addition, to clarify memory volatility and data retention in situations where the system is put in different ACPI power states the following is provided (those ACPI power states are S0, S1, S3, S4, S5 and Modern Standby):

S0 state is the working state, where the dynamic RAM is maintained and is read/write by the processor.

S1 state is a low wake-up latency sleeping state, in this state, no system context is lost (CPU or chipset) and hardware maintains all system contexts.

S3 is called suspend to RAM state or stand-by mode, in this state the dynamic RAM is maintained. Dell systems will be able to go to S3 if the operating system and the peripherals used in the system supports S3 state. Ubuntu support S3 state.

S4 is called suspend to disk state or hibernate mode, with no power. In this state, the dynamic RAM is not maintained. If the system has been commanded to enter S4, the operating system writes the system context to a non-volatile storage file and leave appropriate context markers. When the system comes back to the working state, a restore file from the non-volatile storage can occur. The restore file must be valid. Dell systems will be able to go to S4 if the operating system and the peripherals support S4 state. Windows 11/10/8.1/7 support S4 state.

March 2022