White Papers

February 2021
Statement of Volatility – Dell
WD19S/WD19DCS/WD19TBS
CAUTION: A CAUTION indicates either potential damage to hardware or loss of data and tells you how to avoid the problem.
The Dell WD19S/WD19DCS/WD19TBS 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 WD19S/WD19DCS/WD19TBS 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)
ED SPI ROM
UE1
Non-Volatile memory 128kb Flash, Store EC
program code to control GPIO &
communication with TI PD via i2C interface
No
NA
USB
Gen1/Gen2
Hib ROM
UI4, UI1
UI4 for Gen2,
UI1 for Gen1
Non-Volatile memory 2 Mbit. Stores USB
Hub FW.
No
NA
DP MST Hub
SPI ROM
UV1
Non-Volatile memory 4M bit. Stores DP
MST Hub FW.
No
NA
Intel Titan
Ridge SPI
ROM
U2
Non-Volatile memory 8M bit. Stores Intel
Titan Ridge FW.
No
NA
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, 2667 MHz). Secondary power loss (removing the on-board coin-cell battery) destroys
system data on the system configuration and time-of-day information.
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