Dell OptiPlex XE4 Tower Statement of Volatility
Summary
Statement of Volatility for the Dell OptiPlex XE4 Tower desktop system, cataloging all volatile and non-volatile components on the system board. It details embedded flash memory in the controller, system BIOS chips (32 MB and 16 MB), DDR5 DIMM system memory (8 GB to 128 GB across four slots), SPD EEPROM on each DIMM, TPM module storage, and battery-backed RTC CMOS memory. Remedial actions for data loss prevention are specified for each component. Intended for IT technicians and system administrators responsible for data security, asset disposal, and compliance with data handling policies.
Page 1 Text Content
Statement of Volatility – Dell Opti Plex XE4 Tower 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 XE4 Tower 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 XE4 Tower system board. Table 1. List of Non-Volatile Components on System Board
Remedial Action
User Accessible (Action necessary
Reference for external to prevent loss of
Description Designator Volatility Description data data) Embedded Flash EC1 256K bytes Code/Data SRAM No N/A memory in (224 KB optimized for code embedded controller performance, 32 KB optimized Microchip for code performance), 64 bytes DEC1515H-D0-I/Z2 Battery Powered Storage SRAM System BIOS U2502 Non-volatile memory, 256Mbits No N/A
(32 MB), System BIOS and Video BIOS for basic boot operation, e PSA (on board diagnostics.)
U2504 Non-volatile memory, 128Mbits No N/A
(16 MB), System BIOS and Video BIOS for basic boot operation, e PSA (on board diagnostics.)
System Memory – Connectors: Volatile memory in OFF state Yes Power off system. DDR5 DIMM DIMM1, DIMM2, (see state definitions later in memory
DIMM3, text) DIMM4,
One to four modules will be populated. System memory size will depend on DIMM modules and will be between 8 GB to 28 GB.
System memory On memory Non-volatile EEPROM memory. No N/A
SPD EEPROM DIMM(s) (256 bytes). One Device present
on each DIMM.
Stores memory manufacturer data and timing information for correct operation of system memory.
TPM U9101 27600 bytes non-volatile memory No N/A
located in the TPM module.
RTC CMOS RTC Volatile battery back-backed No Removing the on-
CMOS memory 256 bytes. board Coin Cell Stores CMOS information. battery.
Video memory – UMA Volatile memory in off state. No Enter S3-S5 state type – see next architecture- below. column uses system UMA uses main system memory
memory. size allocated out of main
memory.
M.2 Solid State Disk User Non-volatile magnetic media, Yes Low level format.
replaceable various sizes in GB.
Hard drive User Non-volatile magnetic media, Yes Low level format.
replaceable various sizes in GB.
CD-ROM/RW/ User Non-volatile optical/magnetic Yes Low level DVD/ DVD+RW/ replaceable media. format/erase. Diskette Drives
March 2022
Page Summary Contents For Dell OptiPlex XE4 Tower Statement of Volatility
Manual Details
| Brand | Dell |
|---|---|
| Pages | 2 |
| File Size | 165.29 KB |
| Published | June 26, 2026 |
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Frequently Asked Questions
What happens if I lose power to the system?
Primary power loss (unplugging the cord and removing the battery) destroys all user data on the DDR5 memory.
How does the system handle data when put to sleep?
In S3 suspend-to-RAM state, dynamic RAM is maintained. In S4 suspend-to-disk state, the OS writes context to non-volatile storage.
Does the system retain data in the S5 soft off state?
No, S5 is the 'soft' off state with no power. No data remains in any component, requiring a complete boot when awakened.
Which components on the system board are non-volatile?
Non-volatile components include the System BIOS (U2502/U2504), TPM module, M.2 SSD, hard drives, and optical drives.
What is the supported memory capacity for this model?
The system supports 8 GB to 28 GB of system memory, populated by one to four DDR5 DIMM modules.